Win Probability is a multi-sport statistical analytical tool which measures a team's chances of winning at any point in the game. Win Probability is based on historical analysis of statistics. For example: A football win probability system would take several variables into consideration most notably: score, time left, and field position. The first win probability analysis was done in 1971 by Robert E. Machol

Robert E. Machol

Robert Engel Machol was an American systems engineer and professor of systems at the Kellogg Graduate School of Management of Northwestern University. Machol wrote the earliest significant books directly related to systems engineering...

 and former NFL quarterback Virgil Carter

Virgil Carter

Virgil R. Carter is a former professional American football quarterback who played in the National Football League and the World Football League from 1967 through 1976. He was the first great quarterback from Brigham Young University.While at BYU Carter set six national, 19 conference, and 24...

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External links

• Advanced NFL Stats
• Football Commentary
• Protrade
• http://wp.advancednflstats.com/nflarchive.php?year=2008&team=PIT&gameid=54465Advanced NFL Stats' win probability chart of Super Bowl XLIII
  Super Bowl XLIII
  Super Bowl XLIII was an American football game pitting the American Football Conference champion Pittsburgh Steelers against the National Football Conference champion Arizona Cardinals to decide the National Football League champion for the 2008 season. The game was played on February 1, 2009,...
  
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