Baseball Prospectus
Encyclopedia
Baseball Prospectus is an organization that publishes a website, BaseballProspectus.com, devoted to the sabermetric analysis of baseball. BP has a staff of regular columnists and provides advanced statistics as well player and team performance projections on the site. Since 1996 the BP staff has also published a Baseball Prospectus annual as well as several other books devoted to baseball analysis and history.
Baseball Prospectus has fathered several popular new statistical tools that have become hallmarks of baseball analysis. Baseball Prospectus is accredited by the Baseball Writers Association of America
Baseball Writers Association of America
The Baseball Writers' Association of America is a professional association for baseball journalists writing for daily newspapers, magazines and qualifying Web sites. The BBWAA was founded on October 14, 1908, to improve working conditions for sportswriters in the early part of the 20th century...

. Four of Baseball Prospectus's current regular writers are members of the Baseball Writers Association of America
Baseball Writers Association of America
The Baseball Writers' Association of America is a professional association for baseball journalists writing for daily newspapers, magazines and qualifying Web sites. The BBWAA was founded on October 14, 1908, to improve working conditions for sportswriters in the early part of the 20th century...

 and thus eligible to vote for nominees for Major League Baseball
Major League Baseball
Major League Baseball is the highest level of professional baseball in the United States and Canada, consisting of teams that play in the National League and the American League...

's post-season awards and the Baseball Hall of Fame
National Baseball Hall of Fame and Museum
The National Baseball Hall of Fame and Museum is an American history museum and hall of fame, located at 25 Main Street in Cooperstown, New York, operated by private interests serving as the central point for the study of the history of baseball in the United States and beyond, the display of...

.

Prospectus Entertainment Ventures, LLC

Baseball Prospectus is formally an entity of Prospectus Entertainment Ventures, LLC
Limited liability company
A limited liability company is a flexible form of enterprise that blends elements of partnership and corporate structures. It is a legal form of company that provides limited liability to its owners in the vast majority of United States jurisdictions...

, a private corporation that runs websites and publishes books focusing on the statistical analysis of the sports of baseball
Baseball
Baseball is a bat-and-ball sport played between two teams of nine players each. The aim is to score runs by hitting a thrown ball with a bat and touching a series of four bases arranged at the corners of a ninety-foot diamond...

, basketball
Basketball
Basketball is a team sport in which two teams of five players try to score points by throwing or "shooting" a ball through the top of a basketball hoop while following a set of rules...

, and hockey
Hockey
Hockey is a family of sports in which two teams play against each other by trying to maneuver a ball or a puck into the opponent's goal using a hockey stick.-Etymology:...

.

Prospectus Entertainment Ventures (PEV) partners with Football Outsiders
Football Outsiders
Football Outsiders is a website started in July 2003 which focuses on advanced statistical analysis of the NFL. The site is run by a staff of regular writers, who produce a series of weekly columns using both the site's in-house statistics and their personal analyses of NFL games.In 2005 and 2006,...

 for the publication and promotion of Football Outsiders Almanac (ISBN 1448648459), before 2009 called Pro Football Prospectus (ISBN 0452288479).

On October 10, 2007, PEV launched BasketballProspectus.com, a new website for the analysis of men's college and pro basketball, with Joe Sheehan
Joe Sheehan
Joseph S. Sheehan, born in New York City on February 26, 1971, graduated with a degree in journalism from the University of Southern California in 1994, and lives in the New York City area...

 taking the role of Managing Editor and announcing the lineup of principal writer-analysts for the site. Initially, this website did not require a subscription for access, but it introduced subscriptions in 2011 for access to most of the material on the site. BasketballProspectus.com's first annual book, College Basketball Prospectus 2008–2009 (ISBN 0452289874), was published in October 2008. It released Pro Basketball Prospectus 2009–10 for purchase online in October 2009. Subsequently, it published both College Basketball Prospectus 2010–11 (ISBN 1453872825) and Pro Baskeball Prospectus 2010–11 (ISBN 1453868992) in both print and online (PDF) modes.

On March 19, 2008, Imagine Sports announced a strategic partnership with PEV and Baseball Prospectus. Imagine sports owns the baseball simulation engine "Diamond Mind Baseball
Diamond Mind
Diamond Mind Baseball is a computer baseball simulation game, created by Canadian baseball expert Tom Tippett, who released the first commercial version of the game in 1987. In 1992, he started doing baseball work full time....

".

On October 14, 2008, PEV announced the acquisition of Baseball Digest Daily (BDD), an online blog devoted to baseball analysis and statistics. Joe Hamrahi, new Chief Financial Officer of PEV and founder of BDD, reported that "PEV’s decision to acquire Baseball Digest Daily further enhances the content offerings of Baseball Prospectus by adding some of the game’s best analysts as well as over 100 pages of baseball news and original content. In addition, BDD’s player tracker provides a platform for serious fans and fantasy baseball enthusiasts to easily monitor the progress of their teams, allowing users to manipulate and track the progress of an unlimited set of players over a customized period of time".

At the same time, PEV revealed publicly that it "owns a significant interest in 538 (www.fivethirtyeight.com)
FiveThirtyEight.com
FiveThirtyEight is a polling aggregation website with a blog created by Nate Silver. Sometimes colloquially referred to as 538 dot com or just 538, the website takes its name from the number of electors in the United States electoral college...

, a political analysis website that generates over 700,000 unique visitors daily".

On February 23, 2009, Prospectus Entertainment Ventures (PEV) launched the website Puck Prospectus with the intent of providing cutting-edge analysis of hockey. Will Carroll
Will Carroll
Will Carroll is a sportswriter specializing in the coverage of medical issues, including injuries and performance-enhancing drugs. He currently writes about sports injuries for SI.com...

 assumed the role of the Executive Editor, and Andrew Rothstein, the founder of Puck Prospectus, assumed the role of the Managing Editor. Puck Prospectus published its first annual book, Puck Prospectus 2010–2011 (ISBN 1453817840) in both online and print formats. Initially a free site, Puck Prospectus introduced subscriptions in 2011.

On March 24, 2009, Baseball Prospectus announced that Nate Silver
Nate Silver
Nathaniel Read "Nate" Silver is an American statistician, psephologist, and writer. Silver first gained public recognition for developing PECOTA, a system for forecasting the performance and career development of Major League Baseball players, which he sold to and then managed for Baseball...

 was stepping down as its Managing Partner, and Kevin Goldstein was assuming this role. At the same time, it was announced that BP has a partnership relationship with ESPN.com
ESPN.com
ESPN.com is the official website of ESPN and a division of ESPN Inc. Since launching in 1995 as ESPNet.SportsZone.com, the website has developed numerous sections including: Page 2, SportsNation, ESPN 3.com, ESPN Motion, My ESPN, ESPN Sports Travel, ESPN Video Games, ESPN Insider, ESPN.com's...

.

In January 2010, PEV's Managing Partner Kevin Goldstein reported that one of BP's founding members, Joe Sheehan, had departed the organization. He reported that John Perrotto
John Perrotto
John Perrotto is a sports journalist who has written for The Beaver County Times, Baseball Prospectus, and . He is a member of the Baseball Writers Association of America and thus one of the voters for the Baseball Hall of Fame and other annual Major League Baseball awards.Perotto is a regular...

 had been elevated to full-time status on the BP staff and would become the new Editor-in-Chief of BaseballProspectus.com, taking over that responsibility from Christina Kahrl
Christina Kahrl
Christina Kahrl is one of the co-founders of Baseball Prospectus. She is the former executive editor of the think tank's website, , the former managing editor for their annual publication, and is currently writing and editing for ESPN.com. She is a member of the Baseball Writers Association of...

. And he reported that Jeff Euston was joining the BP staff and that Euston's Cot's Baseball Contracts website would be joining the Baseball Prospectus family. In February 2011, Perrotto was replaced as Editor-in-Chief by Steven Goldman
Steven Goldman
Steven Goldman is a sports writer on baseball and a commentator on the New York Yankees and at times on the New York Mets. Goldman writes "The Pinstriped Bible" and "The Pinstriped Blog" for the Yankees' YES Network website...

.

In February 2010, BP's "Fantasy Manager" Marc Normandin announced that BP had established a partnership with Heater Magazine. Heater Magazine ceased publication after the 2010 season.

History of Baseball Prospectus

Baseball Prospectus (sometimes referred to as BP) was founded in 1996 by Gary Huckabay, who recruited the initial contributor group of Clay Davenport
Clay Davenport
Clay Davenport, a native of Hampton Roads, Virginia, now living in Baltimore, Maryland, is a baseball sabermetrician who co-founded Baseball Prospectus in 1996. He co-edited several of the Baseball Prospectus annual volumes and is a writer for BaseballProspectus.com...

, Rany Jazayerli
Rany Jazayerli
Rany Jazayerli , a Chicago-area dermatologist, is a co-founder of and writer for Baseball Prospectus. He developed the statistical concept of Pitcher Abuse Points , which relates to high pitch counts in baseball....

, Christina Kahrl
Christina Kahrl
Christina Kahrl is one of the co-founders of Baseball Prospectus. She is the former executive editor of the think tank's website, , the former managing editor for their annual publication, and is currently writing and editing for ESPN.com. She is a member of the Baseball Writers Association of...

, and Joe Sheehan
Joe Sheehan
Joseph S. Sheehan, born in New York City on February 26, 1971, graduated with a degree in journalism from the University of Southern California in 1994, and lives in the New York City area...

, with the publication of the first annual set of forecasts. "That first year, BP charged $20 for a statistics guide produced on a photocopier. It printed around 300 copies and sold about 170 to fellow statheads, even though the book was missing the St. Louis Cardinals
St. Louis Cardinals
The St. Louis Cardinals are a professional baseball team based in St. Louis, Missouri. They are members of the Central Division in the National League of Major League Baseball. The Cardinals have won eleven World Series championships, the most of any National League team, and second overall only to...

. 'It was terrible,' recalls Kahrl, 'but it nevertheless didn’t discourage us.' Within a few years Brassey’s Inc. published the guide, which grew to about 3,000 copies. By 2007 it reached the New York Times bestseller list, topping 70,000 copies at $21.95 a pop."

The kind of sabermetric approach favored by Baseball Prospectus has gained significant acceptance by the management of many Major League Baseball
Major League Baseball
Major League Baseball is the highest level of professional baseball in the United States and Canada, consisting of teams that play in the National League and the American League...

 clubs, notably the Boston Red Sox
Boston Red Sox
The Boston Red Sox are a professional baseball team based in Boston, Massachusetts, and a member of Major League Baseball’s American League Eastern Division. Founded in as one of the American League's eight charter franchises, the Red Sox's home ballpark has been Fenway Park since . The "Red Sox"...

 and Cleveland Indians
Cleveland Indians
The Cleveland Indians are a professional baseball team based in Cleveland, Ohio. They are in the Central Division of Major League Baseball's American League. Since , they have played in Progressive Field. The team's spring training facility is in Goodyear, Arizona...

. BP has often been considered the modern successor to Bill James
Bill James
George William “Bill” James is a baseball writer, historian, and statistician whose work has been widely influential. Since 1977, James has written more than two dozen books devoted to baseball history and statistics...

' Baseball Abstract series of books in the 1980s.

Reflecting its legacy as a group of sabermetricians who met over the Internet, BP has no "main office." Working for BP is a second or part-time job for many of the regular staff, who conduct their work for BP in their own home offices.

The website BaseballProspectus.com began in 1997 primarily as a way to present original sabermetric research; publish advanced baseball statistics such as EqA
EQA
EQA may refer to:*Equivalent average , a baseball metric*European Quality Award*External quality assessment...

, the Davenport Translations (DT’s)
Clay Davenport
Clay Davenport, a native of Hampton Roads, Virginia, now living in Baltimore, Maryland, is a baseball sabermetrician who co-founded Baseball Prospectus in 1996. He co-edited several of the Baseball Prospectus annual volumes and is a writer for BaseballProspectus.com...

, and VORP; and promote sales of the annual book.Dave Pease, "Welcome to Big September," BaseballProspectus.com, September 19, 2011: "On September 19, 1996, we registered the domain name baseballprospectus.com. At the time, the main reason we wanted the site is so all our Usenet
Usenet
Usenet is a worldwide distributed Internet discussion system. It developed from the general purpose UUCP architecture of the same name.Duke University graduate students Tom Truscott and Jim Ellis conceived the idea in 1979 and it was established in 1980...

 friends and customers could get more information about the Baseball Prospectus annual, which we'd just self-published with an imposing print run of about 200".
Beginning in 2003, the site placed most of its new articles, its PECOTA
PECOTA
PECOTA, an acronym for Player Empirical Comparison and Optimization Test Algorithm, is a sabermetric system for forecasting Major League Baseball player performance. The word is a backronym based on the name of journeyman major league player Bill Pecota, who with a lifetime batting average of .249...

 forecasts, and some of its statistical databases in a “premium” section that could be accessed only by subscription. However, in May 2011, BP "announced it has made its entire archive of premium and fantasy content over one year old completely and permanently free to the public".

Until 2007, when the site began to post general advertising, the premium subscriptions and book sales were Baseball Prospectus' main source of revenues. Baseball Prospectus does not publish a financial report or information about its subscriber base, but it appears to have used its income to expand its breadth of coverage, and it has not increased its subscription prices since initiating its premium service. It also offers a subscription to those interested in fantasy baseball
Fantasy baseball
Fantasy baseball is a game where participants manage an imaginary roster of real Major League baseball players. The participants compete against one another using those players' real life statistics to score points...

, at a lower price than the premium subscriptions and giving access to fewer features and articles.

BaseballProspectus.com has a corps of staff writers who publish articles on a regular (typically weekly) basis under a featured heading. In addition, occasional articles are published by other BP staff or freelance authors. Some former regular writers no longer appear on the site but are employed on the staffs of major league baseball organizations, including as of 2009 Keith Woolner (Cleveland Indians
Cleveland Indians
The Cleveland Indians are a professional baseball team based in Cleveland, Ohio. They are in the Central Division of Major League Baseball's American League. Since , they have played in Progressive Field. The team's spring training facility is in Goodyear, Arizona...

), James Click (Tampa Bay Rays
Tampa Bay Rays
The Tampa Bay Rays are a Major League Baseball team based in St. Petersburg, Florida. The Rays are a member of the Eastern Division of MLB's American League. Since their inception in , the club has played at Tropicana Field...

), and Dan Fox (Pittsburgh Pirates
Pittsburgh Pirates
The Pittsburgh Pirates are a Major League Baseball club based in Pittsburgh, Pennsylvania. They play in the Central Division of the National League, and are five-time World Series Champions...

). In addition, Keith Law
Keith Law
Keith Law is a senior baseball writer for ESPN.com and ESPN Scouts, Inc. He was formerly a writer for Baseball Prospectus and worked in the front office for the Toronto Blue Jays. He is a member of the Baseball Writers Association of America....

, now an ESPN
ESPN
Entertainment and Sports Programming Network, commonly known as ESPN, is an American global cable television network focusing on sports-related programming including live and pre-taped event telecasts, sports talk shows, and other original programming....

 columnist, in 2002 moved from Baseball Prospectus to work on player evaluation in the front office of the Toronto Blue Jays
Toronto Blue Jays
The Toronto Blue Jays are a professional baseball team located in Toronto, Ontario, Canada. The Blue Jays are a member of the Eastern Division of Major League Baseball 's American League ....

. In 2009, Nate Silver turned his full attention to his FiveThirtyEight political analysis website; he resigned his executive post at BP and handed over management of PECOTA to other BP staff.

Given the competing career opportunities for some of BP's best-known and most statistics-savvy analysts, maintaining a fresh supply of sabermetrically sophisticated writers remains a challenge. During the 2009 baseball season, BP ran a multi-week open talent search competition in the spirit of the popular television program American Idol
American Idol
American Idol, titled American Idol: The Search for a Superstar for the first season, is a reality television singing competition created by Simon Fuller and produced by FremantleMedia North America and 19 Entertainment...

, in which aspiring writers submitted articles for evaluation by BP's staff members, with one contestant a week from among the final ten selected by the staff then voted off by the subscribers. At least three new regular BP writers (winner Ken Funck, Tim Kniker, and Matt Swartz) were discovered through this Prospectus Idol contest. In addition, BP had added Eric Seidman to its staff early in 2009 and then acquired Russell Carleton ("Pizza Cutter") and Colin Wyers in December 2009 to bolster its coverage of technical sabermetric issues. As late as the Fall of 2008, Seidman, Swartz, Carleton, Wyers, Daniel Novick and BP Idol finalist Brian Cartwright made up the entire staff of "Statistically Speaking" aka StatSpeak at MVN.com. Carleton left the BP staff in May 2010. Seidman and Swartz left in February 2011.

Although the site thus maintains a strong sabermetric core and has expanded its statistical databases (most of which are open to non-subscribers), it now regularly attends to issues such as baseball prospects (the First Year Player Draft and minor league baseball
Minor league baseball
Minor league baseball is a hierarchy of professional baseball leagues in the Americas that compete at levels below Major League Baseball and provide opportunities for player development. All of the minor leagues are operated as independent businesses...

), international baseball, the economics and business of baseball (valuation of players, team and stadium finances, the player marketplace), and fantasy baseball
Fantasy baseball
Fantasy baseball is a game where participants manage an imaginary roster of real Major League baseball players. The participants compete against one another using those players' real life statistics to score points...

 (PECOTA, the "Fantasy Focus" series of articles, forecast manager and other fantasy tools). As BP also published monographs on specialized topics, including the application of sabermetric analysis to historical topics – an emphasis clearly seen in Mind Game (2005 – a history of the Boston Red Sox), Baseball Between the Numbers (2006 – which addresses some historical comparisons), and It Ain’t Over 'til It’s Over (2007 – about historical pennant races).

Web site

  • The web site BaseballProspectus.com, which contains articles, statistical reports, and fantasy baseball tools. The site contains some free content, although it has become increasingly available only by paid subscription. A dozen authors write regular bylined columns on the site and numerous other writers contribute occasional articles. The site also covers baseball history as well as current issues and events, including games and series, injuries, forecasts, player profiles, baseball finance, and the player marketplace. In December 2006, the site introduced a feature called "Baseball Prospectus: UNFILTERED."

Annual book

  • A best-selling annual book (current edition Baseball Prospectus 2011) that contains statistics and analysis of the past season and forecasts of the upcoming season.

Other books

  • Other baseball-related books, such as Mind Game: How the Boston Red Sox Got Smart, Won a World Series, and Created a New Blueprint for Winning (2005) (ISBN 0-7611-4018-2) and Baseball Between the Numbers (2006) (ISBN 0-465-00596-9). The latter was chosen by the editors of Amazon.com as the best book on baseball (and third best on sports in general) published in 2006.

Radio show

  • On July 17, 2011, BP inaugurated an XM Sirius radio show, MLB Roundtrip with Baseball Prospectus, co-hosted by BP’s Kevin Goldstein and Steven Goldman with Sirius XM veteran Mike Ferrin. Appearing every Sunday on SiriusXM’s MLB Network Radio channel at 11 PM eastern (XM 89, Sirius 209), the program features three hours of analysis and commentary.

Internet Baseball Awards

  • The annual Internet Baseball Awards] (IBA) are based on fan voting. They started in 1991 with the Most Valuable Player, Cy Young (pitcher), and Rookie of the Year awards, in each of the two major leagues. In 1998, an award for Manager of the Year was added in each league.

Basketball

  • Basketball Prospectus runs a website, BasketballProspectus.com, and published its first annual book, College Basketball Prospectus in 2008 (ISBN 0452289874).

Ice hockey

  • Puck Prospectus runs the PuckProspectus.com website, which focuses mainly on the National Hockey League
    National Hockey League
    The National Hockey League is an unincorporated not-for-profit association which operates a major professional ice hockey league of 30 franchised member clubs, of which 7 are currently located in Canada and 23 in the United States...

    .

Theories

Baseball Prospectus writers promote several theories on proper baseball management and analysis, many of which are contrary to those of conventional baseball wisdom.

Clutch hitting

Baseball Prospectus researchers have concluded that there is no repeatable ability of clutch hitting
Clutch hitter
A clutch hitter is a baseball player with a knack for coming up with the "big" hit. The big hit is typically a game-deciding hit, sometimes a home run, often coming with two outs...

. As writer Joe Sheehan
Joe Sheehan
Joseph S. Sheehan, born in New York City on February 26, 1971, graduated with a degree in journalism from the University of Southern California in 1994, and lives in the New York City area...

 said, "Over the course of a game, a month, a season or a career, there is virtually no evidence that any player or group of players possesses an ability to outperform his established level of ability in clutch situations, however defined." They cite studies which find that there is insignificant correlation between year-to-year performance in clutch situations.

In an article published in 2006, Nate Silver
Nate Silver
Nathaniel Read "Nate" Silver is an American statistician, psephologist, and writer. Silver first gained public recognition for developing PECOTA, a system for forecasting the performance and career development of Major League Baseball players, which he sold to and then managed for Baseball...

 argued that clutch hitting ability does exist to a degree. He argued that although not as important as traditional baseball analysis would suggest, clutch hitting ability was more significant than other sabermetric
Sabermetrics
Sabermetrics is the specialized analysis of baseball through objective, empirical evidence, specifically baseball statistics that measure in-game activity. The term is derived from the acronym SABR, which stands for the Society for American Baseball Research...

 studies had shown. The article also found there to be a connection between clutch hitting ability and situational hitting, or the ability to adjust a hitting approach to fit the given situation.

Views on traditional statistics

Baseball Prospectus writers often argue that traditional baseball statistics such as RBIs
Run batted in
Runs batted in or RBIs is a statistic used in baseball and softball to credit a batter when the outcome of his at-bat results in a run being scored, except in certain situations such as when an error is made on the play. The first team to track RBI was the Buffalo Bisons.Common nicknames for an RBI...

, wins
Win (baseball)
In professional baseball, there are two types of decisions: a win and a loss . In each game, one pitcher on the winning team is awarded a win and one pitcher on the losing team is given a loss in their respective statistics. These pitchers are collectively known as the pitchers of record. Only...

, and Batting Average
Batting average
Batting average is a statistic in both cricket and baseball that measures the performance of cricket batsmen and baseball hitters. The two statistics are related in that baseball averages are directly descended from the concept of cricket averages.- Cricket :...

 are poor reflections of a player's true contributions. For example, they have argued that RBIs are too dependent on factors outside of the player's control, namely the production of other hitters in the lineup. They similarly argue that wins are too affected by factors such as the team's offense and bullpen.

Closer usage

Baseball Prospectus writers assert that teams are typically inefficient in their use of their best relievers
Relief pitcher
A relief pitcher or reliever is a baseball or softball pitcher who enters the game after the starting pitcher is removed due to injury, ineffectiveness, fatigue, ejection, or for other strategic reasons, such as being substituted by a pinch hitter...

. Teams typically assign their most effective reliever to the position of closer
Closer (baseball)
In baseball, a closing pitcher, more frequently referred to as a closer , is a relief pitcher who specializes in closing out games, i.e., getting the final outs in a close game. Closers often appear when the score is close, and the role is often assigned to a team's best reliever. A small number of...

, using him in only save situations (when the team is leading by fewer than four runs in the 9th inning). According to many Baseball Prospectus writers, a team's best reliever should be used when the opposing team has its best chance at increasing its chances of winning.

Views on sacrifice bunts and stolen bases

Many writers argue that the sacrifice bunt
Sacrifice hit
In baseball, a sacrifice bunt is a batter's act of deliberately bunting the ball in a manner that allows a runner on base to advance to another base. The batter is almost always sacrificed but sometimes reaches base due to an error or fielder's choice...

 and stolen base
Stolen base
In baseball, a stolen base occurs when a baserunner successfully advances to the next base while the pitcher is delivering the ball to home plate...

 are overused in baseball. Teams will often attempt these plays when the score is close. Writers for Baseball Prospectus often argue that teams are, on average, actually lowering their expected number of runs scored. They argue that stolen base attempts are not completed frequently enough for them to be beneficial to the offense. For sacrifice bunts, they argue that the team is giving up more by sacrificing an out than they gain by advancing a runner one base. Their thinking is derived from the grid of expected runs in an inning based on the outs and runner situation, which shows that the sacrifice is detrimental to a team given average players in most of the situations in which it is typically used.

In a series of articles in 2004, James Click argued that sacrifice bunts are beneficial in some situations, dependent on the quality of the batter at the plate and the situation in the game.

Statistical tools

Baseball Prospectus writers use a wide variety of sabermetric tools. Among the major tools that they are credited with inventing are:
  • Value over replacement player
    Value over replacement player
    In baseball, value over replacement player is a statistic popularized by Keith Woolner that demonstrates how much a hitter contributes offensively or how much a pitcher contributes to his team in comparison to a fictitious "replacement player," who is an average fielder at his position and a below...

     (VORP) – a measurement of the number of runs contributed by a player over the expected level of performance the average team can obtain if it needs to replace a starting player at minimal cost.
  • Pitcher Abuse Points (PAP) – a measure of the impact of a particular start by a pitcher on his arm, based on pitch count
    Pitch count
    In baseball statistics, pitch count is the number of pitches thrown by a pitcher in a game.Pitch counts are especially a concern for young pitchers, pitchers recovering from injury, or pitchers who have a history of injuries. The pitcher wants to keep the pitch count low because of his stamina...

    .
  • Equivalent average (EqA) – a combination of various hitting numbers designed to express a player's overall offensive contribution.
  • Peripheral ERA
    Peripheral ERA
    Peripheral ERA is a pitching statistic created by the Baseball Prospectus team. It is the expected earned run average taking into account park-adjusted hits, walks, strikeouts, and home runs allowed. Unlike Voros McCracken's DIPS, hits allowed are included...

     (PERA) – a pitcher's expected ERA
    Earned run average
    In baseball statistics, earned run average is the mean of earned runs given up by a pitcher per nine innings pitched. It is determined by dividing the number of earned runs allowed by the number of innings pitched and multiplying by nine...

     based on park-adjusted hits, walks, strikeouts, and home runs allowed.
  • PECOTA
    PECOTA
    PECOTA, an acronym for Player Empirical Comparison and Optimization Test Algorithm, is a sabermetric system for forecasting Major League Baseball player performance. The word is a backronym based on the name of journeyman major league player Bill Pecota, who with a lifetime batting average of .249...

     – a system of player projection based on similarity to previous player seasons.
  • Equivalent Baserunning Runs (EqBRR) – a statistic indicating a player's rate of run production resulting from his baserunning.

Voros McCracken
Voros McCracken
Robert "Vörös" McCracken is a prominent sabermetrician. Vörös is a nickname from his Hungarian heritage, meaning "red," specifically "blood red." He is most widely recognized for his pioneering work on Defense Independent Pitching Statistics .-DIPS published:McCracken first publicly disclosed his...

's pathbreaking article on Defense Independent Pitching Statistics
Defense independent pitching statistics
In baseball, defense-independent pitching statistics measure a pitcher's effectiveness based only on plays that do not involve fielders: home runs allowed, strikeouts, hit batters, walks, and, more recently, fly ball percentage, ground ball percentage, and line drive percentage...

 also first appeared on the BP website.

Current (2011)

  • R. J. Anderson – began writing for BP in January 2011, specializing in transactions and roster management. He formerly wrote for Fangraphs
    Fangraphs
    FanGraphs.com is a website run by Fangraphs Inc., located in Arlington, Virginia, and created and owned by David Appelman that provides statistics for every player in Major League Baseball history....

    .
    For BP he writes the feature column, "Painting the Black".

  • Bill Baer – joined the BP staff in 2010 as a fantasy baseball writer. He also blogs about the Philadelphia Phillies
    Philadelphia Phillies
    The Philadelphia Phillies are a Major League Baseball team. They are the oldest continuous, one-name, one-city franchise in all of professional American sports, dating to 1883. The Phillies are a member of the Eastern Division of Major League Baseball's National League...

     at Crashburn Alley.

  • Tommy Bennett – joined BP in November 2009 and was soon given a regular "Expanded Horizons" bylined column. Bennett is a former writer for the sabermetric website Beyond the Box Score and a contributor to other baseball blogs.

  • Craig Brown – joined the BP staff in 2010 as a fantasy baseball writer. He also blogs about the Kansas City Royals
    Kansas City Royals
    The Kansas City Royals are a Major League Baseball team based in Kansas City, Missouri. The Royals are a member of the Central Division of Major League Baseball's American League. From 1973 to the present, the Royals have played in Kauffman Stadium...

     at Royals Authority.

  • Marc Carig – joined the BP staff in May 2011 as a beat writer with a weekly feature "Clubhouse Confidential" column. Carig also writes about the Yankees
    New York Yankees
    The New York Yankees are a professional baseball team based in the The Bronx, New York. They compete in Major League Baseball in the American League's East Division...

     for the New Jersey Star Ledger. He previously covered the Baltimore Orioles
    Baltimore Orioles
    The Baltimore Orioles are a professional baseball team based in Baltimore, Maryland in the United States. They are a member of the Eastern Division of Major League Baseball's American League. One of the American League's eight charter franchises in 1901, it spent its first year as a major league...

     for the Washington Post. He is a member of the Baseball Writers Association of America
    Baseball Writers Association of America
    The Baseball Writers' Association of America is a professional association for baseball journalists writing for daily newspapers, magazines and qualifying Web sites. The BBWAA was founded on October 14, 1908, to improve working conditions for sportswriters in the early part of the 20th century...

    .

  • Alex Carnevale – in 2006 took over the "Week in Quotes" column, a collection of quotes from baseball personalities from the previous week.

  • Derek Carty – joined the BP staff in 2011 as fantasy baseball editor. He was previously the fantasy baseball editor for The Hardball Times
    The Hardball Times
    is a website which publishes news, original comments and statistical analysis of baseball each week Monday through Friday, in addition to the Hardball Times Annual book which features essays by leading sabermetric personalities. The website features the slogan "Baseball. Insight...

    .

  • Jason Collette – joined the BP staff in 2010 as a fantasy baseball writer. He also writes for RotoWire and is the owner of the fantasy baseball discussion board RotoJunkie.

  • Clay Davenport
    Clay Davenport
    Clay Davenport, a native of Hampton Roads, Virginia, now living in Baltimore, Maryland, is a baseball sabermetrician who co-founded Baseball Prospectus in 1996. He co-edited several of the Baseball Prospectus annual volumes and is a writer for BaseballProspectus.com...

    – a co-founder of BP who is responsible for many of the website's behind-the-scenes operations, including its advanced statistics, statistical reports, and play-off odds simulations. Davenport invented Equivalent average, the Pythagenport Formula (a variation on the Pythagorean expectation
    Pythagorean expectation
    Pythagorean expectation is a formula invented by Bill James to estimate how many games a baseball team "should" have won based on the number of runs they scored and allowed. Comparing a team's actual and Pythagorean winning percentage can be used to evaluate how lucky that team was...

    ) and "Davenport Translations" or "DT's", which translate minor league and international baseball statistics into American major league baseball equivalents and place all statistics on the same scale, regardless of era.

  • Corey Dawkins – joined the BP staff in February 2011. He's the creator of the blog Baseball Injury Tool. He has trained in sports medicine and served as an athletic trainer at Division I and Division III schools. With Marc Normandin, he co-authors the "Collateral Damage" feature column.

  • Neil deMause
    Neil deMause
    Neil deMause is a Brooklyn-based freelance journalist. He has been a writer for Baseball Prospectus since 2003, contributing occasional articles about stadium building and baseball finance. He is co-author of the 1999 book Field of Schemes: How the Great Stadium Swindle Turns Public Money into...

    – a writer for BP since 2003, he has contributed articles about stadium building and baseball finance. Beginning in 2011, he has written a feature column under the title of "The Payoff Pitch". He is co-author of the 1999 book Field of Schemes: How the Great Stadium Swindle Turns Public Money into Private Profit (ISBN 1-56751-138-4). He also maintains his own website as well as writing for The Village Voice
    The Village Voice
    The Village Voice is a free weekly newspaper and news and features website in New York City that features investigative articles, analysis of current affairs and culture, arts and music coverage, and events listings for New York City...

    and other publications.

  • Bradford Doolittle – who has been a writer for the sister site BasketballProspectus.com since 2009, joined the BaseballProspectus.com team in February 2011. He has also been a sportswriter for the Kansas City Star and contributed articles to many baseball blogs.

  • Jeff Euston – creator of the authoritative Cot's Baseball Contracts website, Euston initiated a regular "Contractual Matters" feature column in January 2010.

  • Mike Fast – joined the BP staff in 2010. He maintains his own blog, Fast Balls, and formerly wrote for The Hardball Times
    The Hardball Times
    is a website which publishes news, original comments and statistical analysis of baseball each week Monday through Friday, in addition to the Hardball Times Annual book which features essays by leading sabermetric personalities. The website features the slogan "Baseball. Insight...

    .
    In 2011, he began a regular BP column, "Spinning Yarn".

  • Ken Funck – winner of the first Prospectus Idol competition, began his feature "Changing Speeds" column in July 2009. Puts his skills in database management to work on a range of sabermetric issues, including creating SOMA ("Shorter Outings, More Appearances"), a proposal for radical change in pitching rotations.

  • Steven Goldman
    Steven Goldman
    Steven Goldman is a sports writer on baseball and a commentator on the New York Yankees and at times on the New York Mets. Goldman writes "The Pinstriped Bible" and "The Pinstriped Blog" for the Yankees' YES Network website...

    – effective January 2011 became the Editor-in-Chief of the BP website. Having joined the BP staff in 2003, since 2004 he has written "You Could Look It Up" columns, discussing baseball's history using new statistical tools; since becoming Editor-in-Chief, he began a new feature column, "The BP Broadside". Goldman edited BP's book Mind Game as well as authored his own book Forging Genius: The Making of Casey Stengel (2005 — ISBN 1-57488-873-0) (2006 — ISBN 1-57488-874-9). Goldman also writes the "Pinstripe Bible" and "Pinstripe Blog" for the YES Network
    YES Network
    The Yankees Entertainment and Sports Network is a New York City-based, regional cable television channel; it broadcasts a variety of sports events, with an emphasis on New York Yankees baseball games, and New Jersey Nets basketball games. YES made its debut on March 19, 2002...

     as well as regular columns on the New York Yankees
    New York Yankees
    The New York Yankees are a professional baseball team based in the The Bronx, New York. They compete in Major League Baseball in the American League's East Division...

     and New York Mets
    New York Mets
    The New York Mets are a professional baseball team based in the borough of Queens in New York City, New York. They belong to Major League Baseball's National League East Division. One of baseball's first expansion teams, the Mets were founded in 1962 to replace New York's departed National League...

     for the New York Sun
    New York Sun
    The New York Sun was a weekday daily newspaper published in New York City from 2002 to 2008. When it debuted on April 16, 2002, adopting the name, motto, and masthead of an otherwise unrelated earlier New York paper, The Sun , it became the first general-interest broadsheet newspaper to be started...

    . He has been co-editor or editor of several volumes of the Baseball Prospectus annual.

  • Kevin Goldstein – assumed the role of Managing Partner of Baseball Prospectus in March, 2009. Since 2006 he has written multiple-times-per week "Future Shock" columns on high school, college, and minor league player prospects, with an emphasis on scouting rather than sabermetrics. He also covers Winter League baseball, Spring training
    Spring training
    In Major League Baseball, spring training is a series of practices and exhibition games preceding the start of the regular season. Spring training allows new players to try out for roster and position spots, and gives existing team players practice time prior to competitive play...

    , the Major League Baseball draft, scouting, personnel development, and the baseball player marketplace. Before joining BP, Goldstein was a writer for Baseball America
    Baseball America
    Baseball America is a magazine which covers baseball at every level, with a particular focus on up-and-coming players in high school, college, Japan, and the minor leagues. It is currently published in the form of a bi-weekly newspaper, five annual reference book titles, a weekly podcast, and a...

    .

  • Larry Granillo – creator and manager of the Wezen-Ball baseball blog began bringing the content of that blog to BaseballProspectus.com in February 2011.

  • Jeremy Greenhouse – formerly a writer for Baseball Analysts, Greenhouse joined BP in 2011 and writes a column under the header "Spitballing."

  • Joe Hamrahi – began writing for BP in 2010. Hamrahi previously ran Baseball Daily Digest before it was acquired by BP and now serves as CFO of BP.

  • Jay Jaffe – since 2005 has written a weekly "Prospectus Hit List" column, which "power ranks" all major league teams and comments on the rankings. In July 2007, Jaffe debuted a second weekly column, "Prospectus Hit and Run," which took over some of the content that previously was included in the "Hit List," while allowing him to expound his interpretation of trends more fully. Jaffe created the JAWS score for evaluating Baseball Hall of Fame Prospects. He also maintains his own Futility Infielder blog and is a staff writer for the Pinstripe Bible. As of December, 2010, Jaffe is a member of the Baseball Writers Association of America
    Baseball Writers Association of America
    The Baseball Writers' Association of America is a professional association for baseball journalists writing for daily newspapers, magazines and qualifying Web sites. The BBWAA was founded on October 14, 1908, to improve working conditions for sportswriters in the early part of the 20th century...

    .


  • King Kaufman
    King Kaufman
    King Kaufman is the current writing program manager at Bleacher Report and former daily sports columnist for Salon.com. Kaufman grew up in Los Angeles, lived for six years in St. Louis, and moved back to San Francisco in the summer of 2007...

    – is manager of the writer program at the website Bleacher Report
    Bleacher Report
    Bleacher Report is a website that provides news and fans' opinions of sporting events.The website was launched in February 2008 by California-based entrepreneurs Dave Finocchio, Zander Freund, Bryan Goldberg, and Dave Nemetz...

    .
    He spent 14 years at Salon.com
    Salon.com
    Salon.com, part of Salon Media Group , often just called Salon, is an online liberal magazine, with content updated each weekday. Salon was founded by David Talbot and launched on November 20, 1995. It was the internet's first online-only commercial publication. The magazine focuses on U.S...

    ,
    where he wrote his King Kaufman's Sports Daily column. He joined the BP staff in 2011 to become co-editor of the Baseball Prospectus 2012 annual.

  • Ben Lindbergh – first contributed to BP in 2008 and began writing a by-lined column "Overthinking It," in 2010.

  • Joey Matschulat – joined BP in 2011 and writes a column under the header "Divide and Conquer." Matschulat also writes for the Texas Rangers blog Baseball Time in Arlington.

  • Sam Miller – joined BP in July 2011. Miller is also a sportswriter for the Orange County Register.

  • Dustin Parkes – joined BP in July 2011. Parkes also blogs at The Score.

  • Jason Parks – since 2011 has co-hosted of BP's podcast "Up and In," and writes about prospects and the minor leagues, under the bylined heading "Prospects Will Break Your Heart".

  • John Perrotto
    John Perrotto
    John Perrotto is a sports journalist who has written for The Beaver County Times, Baseball Prospectus, and . He is a member of the Baseball Writers Association of America and thus one of the voters for the Baseball Hall of Fame and other annual Major League Baseball awards.Perotto is a regular...

    – since 2007 has enhanced BP's coverage with his "Every Given Sunday" column and a mid-week "On the Beat" column. In 2010 he also served in the role of BP.com's Editor in Chief (succeeded by Steven Goldman in that role). From 1982 through 2008 he was on the staff of The Beaver County Times
    The Beaver County Times
    The Beaver County Times is a daily newspaper published in Beaver, Pennsylvania, United States. The Times is a direct descendant of many of Beaver County's newspapers, starting with the Minerva, first published in 1807, and generally believed to have been the county's first newspaper...

    and some of his other work can be found online at Timesonline.com. Perrotto also writes regular "Around the Rim" and "On the Beat" columns for Basketball Prospectus. He is a member of the Baseball Writers Association of America
    Baseball Writers Association of America
    The Baseball Writers' Association of America is a professional association for baseball journalists writing for daily newspapers, magazines and qualifying Web sites. The BBWAA was founded on October 14, 1908, to improve working conditions for sportswriters in the early part of the 20th century...

    .

  • Mike Petriello – joined the BP staff in 2010 as a fantasy baseball writer. He also blogs about the Los Angeles Dodgers at Mike Scioscia's Tragic Illness.

  • Emma Span – author of the book 90% of the Game is Half Mental: And Other Tales from the Edge of Baseball Fandom (2010) (ISBN 0345501756), as well as a contributor to many other publications, joined the BP staff in 2011.


  • Cecilia M. Tan
    Cecilia Tan
    Cecilia Tan is a writer, editor, sexuality activist, and founder of Circlet Press, the first press devoted primarily to erotic science fiction and fantasy. She lives in Cambridge, Massachusetts. She is the director of media relations for the New England Leather Alliance...

    – is the author of The 50 Greatest Yankee Games (New York: Wiley, 2005) (ISBN 0471763136) and co-author (with Bill Nowlin) of The 50 Greatest Red Sox Games (Wiley, 2006) (ISBN 0471697516), and she is currently Publications Director for the Society for American Baseball Research
    Society for American Baseball Research
    The Society for American Baseball Research was established in Cooperstown, New York, in August 1971 by Bob Davids of Washington, D.C. The Society's mission is to foster the research and dissemination of the history and record of baseball, while generating interest in the game...

     (SABR). She joined the BP staff in 2011 to become co-editor of the Baseball Prospectus 2012 annual.

  • Dan Turkenkopf – formerly a writer for Beyond the Box Score and The Hardball Times
    The Hardball Times
    is a website which publishes news, original comments and statistical analysis of baseball each week Monday through Friday, in addition to the Hardball Times Annual book which features essays by leading sabermetric personalities. The website features the slogan "Baseball. Insight...

    , joined BP in 2011.

  • Colin Wyers – formerly a writer for The Hardball Times
    The Hardball Times
    is a website which publishes news, original comments and statistical analysis of baseball each week Monday through Friday, in addition to the Hardball Times Annual book which features essays by leading sabermetric personalities. The website features the slogan "Baseball. Insight...

    ,
    joined the BP staff in December 2009. A Cubs fan and resident of Davenport, Iowa, Wyers is engaged in developing new defense metrics. In 2010 be began to write a regular feature column under the heading "Manufactured Runs". In 2010 he became the chief architect of improvements in the PECOTA forecasting system.

  • Geoff Young – founder and editor of Ducksnorts, a blog devoted to the San Diego Padres
    San Diego Padres
    The San Diego Padres are a Major League Baseball team based in San Diego, California. They play in the National League Western Division. Founded in 1969, the Padres have won the National League Pennant twice, in 1984 and 1998, losing in the World Series both times...

    , Young joined the BP staff in 2010.

Former

  • Jim Baker – joined BP in 2004 and wrote a "Prospectus Matchups" weekly column through 2008, in which he discussed upcoming series. Baker contributed to the first edition of Bill James' Historical Baseball Abstract and has also written for ESPN.com
    ESPN.com
    ESPN.com is the official website of ESPN and a division of ESPN Inc. Since launching in 1995 as ESPNet.SportsZone.com, the website has developed numerous sections including: Page 2, SportsNation, ESPN 3.com, ESPN Motion, My ESPN, ESPN Sports Travel, ESPN Video Games, ESPN Insider, ESPN.com's...

    , primarily on ESPN's "Insider" and "Page 2".

  • Jesse Behr - wrote for BP from June 2010 until May of 2011 with regular blog column entitled "Analyze this." Founded The 'Burgh Blues blog on the Pittsburgh Pirates
    Pittsburgh Pirates
    The Pittsburgh Pirates are a Major League Baseball club based in Pittsburgh, Pennsylvania. They play in the Central Division of the National League, and are five-time World Series Champions...

     and now runs the website Field of Ignorance.com. 'Burgh Blues was rated the number one MLBlog in 2009.

  • Maury Brown – debuted with a new column in 2006 called "The Ledger Domain," in which he discusses the business of baseball. Brown is former co-chair of SABR’s Business of Baseball committee and was the creator of the committee's website BusinessOfBaseball.com. He now is the founder and creator of The Business of Sports Network, which includes BizofBaseball.com. Brown wrote an essay outlining the collusion rulings in the '80s in Rob Neyer
    Rob Neyer
    Rob Neyer is a baseball author and writer for SB Nation. He started his career working for Bill James and STATS, and then joined ESPN.com as a columnist from 1996 to January 2011 before becoming SB Nation's National Baseball Editor...

    's "Big Book of Baseball Blunders" and is a former columnist for The Hardball Times
    The Hardball Times
    is a website which publishes news, original comments and statistical analysis of baseball each week Monday through Friday, in addition to the Hardball Times Annual book which features essays by leading sabermetric personalities. The website features the slogan "Baseball. Insight...

    . In 2010 he wrote a series of articles for Yahoo! Sports on salary arbitration, and has done articles for Baseball America and the New York Post. After early 2008, Brown rarely wrote for BP.

  • Dave Cameron
    Dave Cameron (baseball analyst)
    Dave Cameron is the managing editor and a senior writer of FanGraphs and owner-operator of USS Mariner.-Biography:Cameron grew up in Seattle. In 1994 he started writing about baseball in Usenet newsgroups and reading Rob Neyer. He also played baseball...

    – In 2003 wrote a regular feature, "Prospecting," in which he focused on minor league prospects. Co-author of U.S.S. Mariner blog and editor/owner of the sabermetric website FanGraphs
    Fangraphs
    FanGraphs.com is a website run by Fangraphs Inc., located in Arlington, Virginia, and created and owned by David Appelman that provides statistics for every player in Major League Baseball history....

    .

  • Russell Carleton – a clinical psychologist who formerly published the blog Baseball Psychologist and developed the blog Statistically Speaking, Carleton is a well-known sabermetrician under the nom de plume
    Pen name
    A pen name, nom de plume, or literary double, is a pseudonym adopted by an author. A pen name may be used to make the author's name more distinctive, to disguise his or her gender, to distance an author from some or all of his or her works, to protect the author from retribution for his or her...

     "Pizza Cutter" and has contributed to numerous on-line baseball blogs. He claims that sabermetrics saved his dissertation. In December 2009, he inaugurated a "Baseball Therapy" weekly column on BP. On May 3, 2010, he announced that he was departing BP.

  • Will Carroll
    Will Carroll
    Will Carroll is a sportswriter specializing in the coverage of medical issues, including injuries and performance-enhancing drugs. He currently writes about sports injuries for SI.com...

    – a Senior Writer for BP who from 2003 through 2010 wrote the "Under The Knife" daily column, a summary of injury news, and was a host of Baseball Prospectus Radio. In the preseason, he wrote "Team Health Reports" and "Positional Health Reports." He also has published Saving the Pitcher (ISBN 1-56663-578-0), and The Juice (ISBN 1-56663-668-X), which won the 2005 Sporting News-SABR Baseball Research Award. He is a contributor to MLB.com's
    MLB.com
    MLB.com is the official site of Major League Baseball and is overseen by Major League Baseball Advanced Media, L.P. . MLB.com is a source of baseball-related information, including baseball news, statistics, and sports columns...

     Fantasy 411
    Fantasy 411
    The Fantasy 411 is an Major League Baseball radio and television broadcast on MLB.com. The hosts are primarily Mike Siano, Cory Schwartz, Casey Stern, Fantasy Sports Guru Broadway CJ Reo and Zach Simon with occasional contributions from Vinny Micucci, Brandon Costa, Will Carroll and Joe Sheehan of...

     and writes a weekly column on NFL injuries for RotoWire.com. Carroll is a member of the Baseball Writers Association of America
    Baseball Writers Association of America
    The Baseball Writers' Association of America is a professional association for baseball journalists writing for daily newspapers, magazines and qualifying Web sites. The BBWAA was founded on October 14, 1908, to improve working conditions for sportswriters in the early part of the 20th century...

    . At the end of September, 2010, Carroll left the BP staff.

  • James Click – Began contributing to BP in 2003 and wrote a featured "Crooked Numbers" column from 2005 to 2006 until he joined the Tampa Bay Rays
    Tampa Bay Rays
    The Tampa Bay Rays are a Major League Baseball team based in St. Petersburg, Florida. The Rays are a member of the Eastern Division of MLB's American League. Since their inception in , the club has played at Tropicana Field...

     as Coordinator of Baseball Operations.

  • Dan Fox – from April 2006 to April 2008, wrote a weekly "Schrödinger's Bat" column, usually employing hard-core quantitative sabermetric techniques. Fox is a former author for The Hardball Times
    The Hardball Times
    is a website which publishes news, original comments and statistical analysis of baseball each week Monday through Friday, in addition to the Hardball Times Annual book which features essays by leading sabermetric personalities. The website features the slogan "Baseball. Insight...

    . In addition to innovative analyses of pitch-by-pitch data and creating new metrics accounting for baserunning, he has developed and distributed software for charting the locations of balls in play. He also expounds on sports, technology, history and other curiosities in his blog, Dan Agonistes. On April 17, 2008, in the publication of his 100th "Schrödinger's Bat" column, Fox announced that he was leaving BP to take a position as Director of Player Systems Development in the front office of the Pittsburgh Pirates
    Pittsburgh Pirates
    The Pittsburgh Pirates are a Major League Baseball club based in Pittsburgh, Pennsylvania. They play in the Central Division of the National League, and are five-time World Series Champions...

    .

  • Shawn Hoffman – began a regular column, "The Biz Beat," in 2009, later renamed "Squawking Baseball." Shawn also maintains a blog, Squawking Baseball, which provides a "Wall Street Analysis of the Major League Baseball Player Market". He has also published on other baseball related blogs, including The Baseball Analysts.

  • Gary Huckabay – founder and former Executive Vice-President of Baseball Prospectus, announced his return as a regular contributor to BaseballProspectus.com with an "Unfiltered" post on August 2, 2007. He resumed his "6–4–3" bylined columns on September 4, 2007. However, this was one of only two such columns contributed during the 2007 season.

  • Derek Jacques – since 2006 has written on a variety of topics including the "Prospectus Game of the Week" feature in 2006, the Caribbean Series, and the "Prospectus Toolbox" series in which he explains advanced sabermetric tools in layman's language.

  • Rany Jazayerli
    Rany Jazayerli
    Rany Jazayerli , a Chicago-area dermatologist, is a co-founder of and writer for Baseball Prospectus. He developed the statistical concept of Pitcher Abuse Points , which relates to high pitch counts in baseball....

    – a co-founder of BP who writes occasional "Doctoring the Numbers" columns for Baseball Prospectus.com. For many years he also compiled BP's annual Top 50 Prospects list. He is the inventor of the concept of Pitcher Abuse Points (PAP). He also has his own blog, Rany on the Royals.

  • Christina Kahrl
    Christina Kahrl
    Christina Kahrl is one of the co-founders of Baseball Prospectus. She is the former executive editor of the think tank's website, , the former managing editor for their annual publication, and is currently writing and editing for ESPN.com. She is a member of the Baseball Writers Association of...

    – one of the co-founders of BP and the co-editor of most editions of the group's annual books. In April 2011 she left BP to join the baseball writing and editorial staff of ESPN.com
    ESPN.com
    ESPN.com is the official website of ESPN and a division of ESPN Inc. Since launching in 1995 as ESPNet.SportsZone.com, the website has developed numerous sections including: Page 2, SportsNation, ESPN 3.com, ESPN Motion, My ESPN, ESPN Sports Travel, ESPN Video Games, ESPN Insider, ESPN.com's...

    .
    For BP she wrote the bi-weekly "Transaction Analysis" columns, listing and then commenting on the roster activity of all 30 major league teams. In 2011 she began a new feature column, "Purpose Pitches". She has also written for SportsIllustrated.com, ESPN.com
    ESPN.com
    ESPN.com is the official website of ESPN and a division of ESPN Inc. Since launching in 1995 as ESPNet.SportsZone.com, the website has developed numerous sections including: Page 2, SportsNation, ESPN 3.com, ESPN Motion, My ESPN, ESPN Sports Travel, ESPN Video Games, ESPN Insider, ESPN.com's...

    ,
    the New York Sun
    New York Sun
    The New York Sun was a weekday daily newspaper published in New York City from 2002 to 2008. When it debuted on April 16, 2002, adopting the name, motto, and masthead of an otherwise unrelated earlier New York paper, The Sun , it became the first general-interest broadsheet newspaper to be started...

    , Salon.com
    Salon.com
    Salon.com, part of Salon Media Group , often just called Salon, is an online liberal magazine, with content updated each weekday. Salon was founded by David Talbot and launched on November 20, 1995. It was the internet's first online-only commercial publication. The magazine focuses on U.S...

    , Slate
    Slate (magazine)
    Slate is a US-based English language online current affairs and culture magazine created in 1996 by former New Republic editor Michael Kinsley, initially under the ownership of Microsoft as part of MSN. On 21 December 2004 it was purchased by the Washington Post Company...

    , Playboy
    Playboy
    Playboy is an American men's magazine that features photographs of nude women as well as journalism and fiction. It was founded in Chicago in 1953 by Hugh Hefner and his associates, and funded in part by a $1,000 loan from Hefner's mother. The magazine has grown into Playboy Enterprises, Inc., with...

    , and the Washington Blade, and was an associate editor of The ESPN Pro Football Encyclopedia. She is the former Acquisitions Editor of Brassey's Sports, a mid-list publisher that focused on sports history and analysis. Kahrl is a member of the Baseball Writers Association of America
    Baseball Writers Association of America
    The Baseball Writers' Association of America is a professional association for baseball journalists writing for daily newspapers, magazines and qualifying Web sites. The BBWAA was founded on October 14, 1908, to improve working conditions for sportswriters in the early part of the 20th century...

    .

  • Jonah Keri
    Jonah Keri
    Jonah Keri is a Canadian journalist, sportswriter and an editor. He is also a New York Times bestselling author.-Early life and education:...

    – wrote on miscellaneous topics on occasion, most involving interviews with baseball administrators and personalities. Edited BP's book Baseball Between the Numbers. He is the author of The Extra 2%: How Wall Street Strategies Took a Major League Baseball Team from Worst to First (2011) (ISBN 0345517652). He is now a senior writer for Fangraphs
    Fangraphs
    FanGraphs.com is a website run by Fangraphs Inc., located in Arlington, Virginia, and created and owned by David Appelman that provides statistics for every player in Major League Baseball history....

    .

  • David Laurila – from late 2006 to May 2011 took the main responsibility for the "Prospectus Q & A" column, in which he interviewed personages from the baseball community: players, managers, and analysts/writers. He is the author of the book Interviews from Red Sox Nation (2006) (ISBN 0977743616). As of December, 2010, Laurila is a member of the Baseball Writers Association of America
    Baseball Writers Association of America
    The Baseball Writers' Association of America is a professional association for baseball journalists writing for daily newspapers, magazines and qualifying Web sites. The BBWAA was founded on October 14, 1908, to improve working conditions for sportswriters in the early part of the 20th century...

    . Laurila began writing for Fangraphs
    Fangraphs
    FanGraphs.com is a website run by Fangraphs Inc., located in Arlington, Virginia, and created and owned by David Appelman that provides statistics for every player in Major League Baseball history....

    in May 2011.

  • Keith Law
    Keith Law
    Keith Law is a senior baseball writer for ESPN.com and ESPN Scouts, Inc. He was formerly a writer for Baseball Prospectus and worked in the front office for the Toronto Blue Jays. He is a member of the Baseball Writers Association of America....

    – a writer for BP from 1997 until 2002 when he joined the Toronto Bluejays organization as a "Consultant to Baseball Operations." Now a writer for ESPN.com
    ESPN.com
    ESPN.com is the official website of ESPN and a division of ESPN Inc. Since launching in 1995 as ESPNet.SportsZone.com, the website has developed numerous sections including: Page 2, SportsNation, ESPN 3.com, ESPN Motion, My ESPN, ESPN Sports Travel, ESPN Video Games, ESPN Insider, ESPN.com's...

    and a member of the Baseball Writers Association of America.

  • Marc Normandin – a writer for BP from 2006 until 2011, wrote the weekly "Player Profile" column in which he analyzed the record and performance of a particular player from a sabermetric perspective. Beginning in Fall 2007 he wrote a twice-weekly "BP Fantasy Beat" column, offering strategic advice to fantasy baseball players. In February 2010 he announced his appointment as BP's Fantasy Manager.

  • Doug Pappas
    Doug Pappas
    Doug Pappas was a baseball writer and researcher who was considered the foremost expert on the business of baseball.Pappas was a graduate of the University of Chicago and the University of Michigan Law School , where he had been Executive Note Editor of the Michigan Law Review.-Contributions to...

    – was a regular contributor to Baseball Prospectus from 2001 to 2004 and a listed contributor to the 4th and 5th editions of Total Baseball
    Total Baseball
    Total Baseball is a baseball encyclopedia first compiled by John Thorn and Pete Palmer in 1989. The latest edition, published in 2004, is its eighth...

    .
    Pappas was also very active within the Society for American Baseball Research
    Society for American Baseball Research
    The Society for American Baseball Research was established in Cooperstown, New York, in August 1971 by Bob Davids of Washington, D.C. The Society's mission is to foster the research and dissemination of the history and record of baseball, while generating interest in the game...

     (SABR), in 1994 founding and then chairing the SABR Business of Baseball committee and serving as the organization's parliamentarian.

  • Dayn Perry
    Dayn Perry
    -Journalism:His journalism can be found on FanGraphs online journal NotGraphs. He formerly published with BaseballProspectus.com and at Foxsports.com...

    – wrote his "Can of Corn" column on BP from 2003 to 2008, except for a two-year hiatus in 2006–2007. Author of the book Winners: How Good Baseball Teams Become Great Ones (2006) (ISBN 0471721743), Perry is a regular contributor to FoxSports.com
    Foxsports.com
    Foxsports.com provides sports news, scores, sports statistics, sports and entertainment video, sports fantasy leagues and fantasy information. Launched in July 2001, it is a unit of Fox Interactive Media, which also includes other News Corporation online businesses, including MySpace, IGN...

    and also writes for Fangraphs
    Fangraphs
    FanGraphs.com is a website run by Fangraphs Inc., located in Arlington, Virginia, and created and owned by David Appelman that provides statistics for every player in Major League Baseball history....

    .

  • David Pinto
    David Pinto
    David Pinto is the author of the blog Baseball Musings, a general-interest baseball blog, as well as a columnist for Sporting News. He previously worked at Project Scoresheet, STATS, Inc., ESPN, Baseball Info Solutions, and Baseball Prospectus....

    – joined BP in 2007 and wrote "The Big Picture", a weekly column which presented ideas about the league in general. Pinto is also a writer for Baseball Musings, a general interest baseball blog. On September 26, 2007, Pinto wrote a farewell column at BP and announced that he will become a regular columnist for Sporting News.

  • Eric Seidman – after joining BP in 2008, from 2009 til 2010 he published a feature column, "Checking the Numbers". In April 2010, he began a bi-weekly "Seidnotes" column as well. He last published on Baseball Prospectus in February 2011, and now write for Fangraphs
    Fangraphs
    FanGraphs.com is a website run by Fangraphs Inc., located in Arlington, Virginia, and created and owned by David Appelman that provides statistics for every player in Major League Baseball history....

    .

  • Joe Sheehan
    Joe Sheehan
    Joseph S. Sheehan, born in New York City on February 26, 1971, graduated with a degree in journalism from the University of Southern California in 1994, and lives in the New York City area...

    – a co-founder and a BP Senior Writer who discussed an important topic from the previous day's action in the almost-daily "Prospectus Today" column. Sheehan co-edited the first Baseball Prospectus annual volume, which appeared in 1996, as well as several subsequent editions. In October 2007, he assumed an added role as Managing Editor of Basketball Prospectus. In his last BP column, published on December 31, 2009, Sheehan wrote: "This is my last column for Baseball Prospectus. My contract ends today, making me like any number of free agents looking for work. No hard feelings or recriminations, just two entities doing business".

  • Nate Silver
    Nate Silver
    Nathaniel Read "Nate" Silver is an American statistician, psephologist, and writer. Silver first gained public recognition for developing PECOTA, a system for forecasting the performance and career development of Major League Baseball players, which he sold to and then managed for Baseball...

    – from 2003 to 2009 wrote a "Lies, Damned Lies" column, which often debunked current common baseball opinion. He created BP's PECOTA
    PECOTA
    PECOTA, an acronym for Player Empirical Comparison and Optimization Test Algorithm, is a sabermetric system for forecasting Major League Baseball player performance. The word is a backronym based on the name of journeyman major league player Bill Pecota, who with a lifetime batting average of .249...

     forecasting system, the QuikERA (QERA) statistic, MORP (Market value Over Replacement Player), and the Elo rating
    Elo rating system
    The Elo rating system is a method for calculating the relative skill levels of players in two-player games such as chess. It is named after its creator Arpad Elo, a Hungarian-born American physics professor....

     adapted by Clay Davenport for use in BP's Postseason Odds report. In 2009 he created ESPN's Soccer Power Index (SPI) for the 2010 FIFA World Cup. He writes a political blog FiveThirtyEight, now in partnership with The New York Times
    The New York Times
    The New York Times is an American daily newspaper founded and continuously published in New York City since 1851. The New York Times has won 106 Pulitzer Prizes, the most of any news organization...

    .

  • Bryan Smith – joined the BP staff in 2007 after merging his Wait 'Til Next Year blog into The Baseball Analysts in 2005. Writes on college baseball, the minor leagues, and major league prospects under the "Wait 'Til Next Year" feature heading. Smith has also written for SI.com, Baseball America
    Baseball America
    Baseball America is a magazine which covers baseball at every level, with a particular focus on up-and-coming players in high school, college, Japan, and the minor leagues. It is currently published in the form of a bi-weekly newspaper, five annual reference book titles, a weekly podcast, and a...

    ,
    and other media outlets. In May 2008, he left BP to take a position with MLB Advanced Media. In February 2009 Smith rejoined BP and resumed his Wait 'Til Next Year column. As of 2010 he is a writer for Fangraphs
    Fangraphs
    FanGraphs.com is a website run by Fangraphs Inc., located in Arlington, Virginia, and created and owned by David Appelman that provides statistics for every player in Major League Baseball history....

    .

  • Matt Swartz – began writing a regular feature column "Ahead in the Count" in July 2009 after being a finalist in BP's "Prospectus Idol" competition. He is one of the bloglords at The Good Phight, a Philadelphia Phillies
    Philadelphia Phillies
    The Philadelphia Phillies are a Major League Baseball team. They are the oldest continuous, one-name, one-city franchise in all of professional American sports, dating to 1883. The Phillies are a member of the Eastern Division of Major League Baseball's National League...

     blog, and has contributed sabermetrically oriented articles to other online media. As of 2011 he is a writer for Fangraphs
    Fangraphs
    FanGraphs.com is a website run by Fangraphs Inc., located in Arlington, Virginia, and created and owned by David Appelman that provides statistics for every player in Major League Baseball history....

    .

  • Keith Woolner
    Keith Woolner
    Keith Woolner is an author for Baseball Prospectus and is the creator of the runs-based statistic VORP or Value Over Replacement Player. VORP is acknowledged by the sabermetrics community as one of the key concepts in the analysis of a player's performance and market valuation.-Education and early...

    – began writing for BP in 1999 and in 2001–2007 wrote "Aim For The Head" columns, discussing statistics and how they help to interpret the game. Worked behind the scenes on BP's databases and the "statistics" section of the website. Woolner invented Value over replacement player
    Value over replacement player
    In baseball, value over replacement player is a statistic popularized by Keith Woolner that demonstrates how much a hitter contributes offensively or how much a pitcher contributes to his team in comparison to a fictitious "replacement player," who is an average fielder at his position and a below...

     and a variation on Pitcher Abuse Points. Woolner left BP in May 2007 to join the front office of the Cleveland Indians
    Cleveland Indians
    The Cleveland Indians are a professional baseball team based in Cleveland, Ohio. They are in the Central Division of Major League Baseball's American League. Since , they have played in Progressive Field. The team's spring training facility is in Goodyear, Arizona...

    .

  • Derek Zumsteg – From 2002 to 2007 wrote a feature "Breaking Balls" column for BP. Beginning in 2000 he also wrote numerous other columns, including founding the "Week in Quotes" feature. Co-owner, with David Cameron, of the U.S.S. Mariner blog devoted to the Seattle Mariners
    Seattle Mariners
    The Seattle Mariners are a professional baseball team based in Seattle, Washington. Enfranchised in , the Mariners are a member of the Western Division of Major League Baseball's American League. Safeco Field has been the Mariners' home ballpark since July...

    .

Criticism of methodology

Baseball Prospectus, as well as other sabermetric
Sabermetrics
Sabermetrics is the specialized analysis of baseball through objective, empirical evidence, specifically baseball statistics that measure in-game activity. The term is derived from the acronym SABR, which stands for the Society for American Baseball Research...

 analysts, are criticized for taking the human aspect out of the game of baseball. For example, Murray Chass
Murray Chass
Murray Chass is an American sportswriter and blogger who covers baseball. He previously wrote for The New York Times and before that the Associated Press on baseball and sports legal and labor relations. In 2003 the Baseball Writers Association of America honored him with the J. G. Taylor Spink...

 of the New York Times wrote in an article that he did not want to hear or read about new-age baseball statistics any more (referencing Value over replacement player
Value over replacement player
In baseball, value over replacement player is a statistic popularized by Keith Woolner that demonstrates how much a hitter contributes offensively or how much a pitcher contributes to his team in comparison to a fictitious "replacement player," who is an average fielder at his position and a below...

 specifically), saying:
"I suppose that if stats mongers want to sit at their computers and play with these things all day long, that’s their prerogative. But their attempt to introduce these new-age statistics into the game threatens to undermine most fans’ enjoyment of baseball and the human factor therein. People play baseball. Numbers don’t."


Then BP Managing Partner, Nate Silver responded to this criticism in "An Open Letter to Murray Chass," including offering to meet Chass to watch a ballgame. He expounded on the case for a positive impact of sabermetrics on the game of baseball in an article "How Sabermetrics Helps Build a Better Ballgame," published on Baseball Analysts.com.

Another type of criticism comes from those who believe that by broadening its coverage and audience, Baseball Prospectus is becoming more like the mainstream media and losing what made it unique. In response to a question along this line in an on-line chat, Silver wrote:
From a brand standpoint, we're more concerned about differentiation based on quality than differentiation based on where we fall on sort of the "saberpolitical" spectrum.

Criticism of journalistic standards

Baseball Prospectus was widely criticized for publishing and aggressively promoting a 2003 story
claiming that banished player/manager Pete Rose
Pete Rose
Peter Edward Rose , nicknamed "Charlie Hustle", is a former Major League Baseball player and manager. Rose played from 1963 to 1986, and managed from 1984 to 1989....

 had reached an agreement to return to baseball. Will Carroll made the rounds on television and radio, claiming to have spoken to unnamed sources who had actually seen the agreement. Spokesmen for both Rose and Major League Baseball refuted the claim, but Carroll and his colleagues insisted their reporting was accurate. No other news source confirmed the story. In fact, Rose was not reinstated and remains banned from baseball. Neither Carroll nor Zumsteg ever published a retraction or an explanation.

Books published by Baseball Prospectus

  • Extra Innings: More Baseball Between the Numbers from the Team at Baseball Prospectus. New York: Basic Books, 2012. ISBN 0-465-02403-3 (hardback).

External links

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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