Circle changeup
Encyclopedia
In 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...

, a circle changeup is a pitch
Pitch (baseball)
In baseball, a pitch is the act of throwing a baseball toward home plate to start a play. The term comes from the Knickerbocker Rules. Originally, the ball had to be literally "pitched" underhand, as with pitching horseshoes. Overhand throwing was not allowed until 1884.The biomechanics of...

 thrown with a grip that includes a circle formation, hence the name. The circle is formed by making a circle with the index finger, holding the thumb at the bottom of the ball parallel to the middle finger and holding the ball far out in the hand. The ball is thrown turning the palm out (pronating the forearm).

Throwing mechanics

A circle change can also be used to provide screwball
Screwball
A screwball , is a baseball pitch that is thrown so as to break in the opposite direction of a slider or curveball. Depending on the pitcher's arm angle, the ball may also have a sinking action....

-type movement but without the stress placed on the arm by a traditional screwball. By placing the index and ring fingers slightly to the inside (that is, towards the thumb) of the ball and sharply pronating the forearm at release, a pitcher can make the ball move downward and inside. Pitchers with smaller hands will only place the index finger slightly to the inside (that is, towards the thumb) of the ball. A left-handed pitcher's circle change will break down and away from a right-handed batter. Effective circle changeups can reduce the platoon split a pitcher will experience.

To follow proper form, a pitcher releases the ball while keeping his wrist straight, then follows through fully. Additional change in velocity can be achieved by dragging the foot that would normally follow through fully with a fastball delivery. This results in considerably less velocity with an otherwise normal motion. Simply using a slower arm motion is undesirable, as it may tip off the batter, and will invariably result in less movement on the pitch. If this pitch is placed too high in the strike zone
Strike zone
In baseball, the strike zone is a conceptual right pentagonal prism over home plate which defines the boundaries through which a pitch must pass in order to count as a strike when the batter does not swing.-Definition:...

, it can be hit very hard. It is an effective pitch to throw early in the count
Count (baseball)
In baseball, the count refers to the number of balls and strikes a batter has in his current plate appearance. It is usually announced as a pair of numbers, for example, 3-1 , with the first number being the number of balls and the second being the number of strikes.An individual pitch may also be...

 to produce a groundball; it is not traditionally used to acquire a strikeout. By rotating the wrist (before the release) the pitcher can change the movement from resembling a fastball
Fastball
The fastball is the most common type of pitch in baseball. Some "power pitchers," such as Nolan Ryan and Roger Clemens, have thrown it at speeds of 95–106 mph and up to 108.1 mph , relying purely on speed to prevent the ball from being hit...

 to resembling a curveball
Curveball
The curveball is a type of pitch in baseball thrown with a characteristic grip and hand movement that imparts forward spin to the ball causing it to dive in a downward path as it approaches the plate. Its close relatives are the slider and the slurve. The "curve" of the ball varies from pitcher to...

.

An effective changeup must be thrown with an identical arm action to a fastball, to avoid tipping off the batter.

Professional practitioners

Johan Santana
Johan Santana
Johan Alexander Santana Araque is a Major League Baseball left-handed starting pitcher who is currently playing for the New York Mets. He is a native of Venezuela....

, Pedro Martínez
Pedro Martínez
Pedro Jaime Martínez is a retired Major League Baseball pitcher. He is an eight-time All-Star, three-time Cy Young Award winner, and 2004 World Series champion...

, Cole Hamels
Cole Hamels
Colbert Michael "Cole" Hamels is a left-handed starting pitcher for the Philadelphia Phillies. Hamels throws a four-seam fastball, a circle changeup, a curveball, and a cut fastball, which he added in 2010...

, Huston Street
Huston Street
Huston Lowell Street is an American baseball relief pitcher for the Colorado Rockies. His father is former University of Texas quarterback James Street, and his brother Juston Street is currently a pitcher for the minor league Vancouver Canadians....

, Zack Greinke
Zack Greinke
Donald Zackary "Zack" Greinke is a Major League Baseball starting pitcher for the Milwaukee Brewers. Greinke won the American League Cy Young Award in 2009 with the Kansas City Royals.-High school & minor leagues:Greinke was born in Orlando, Florida...

, Edwar Ramírez
Edwar Ramírez
Edwar Emilio Ramírez is a Major League Baseball relief pitcher who is currently a free agent.-Los Angeles Angels of Anaheim: 2002–2005:...

 are pitchers who rely heavily on their circle changeup. Longtime Atlanta Braves
Atlanta Braves
The Atlanta Braves are a professional baseball club based in Atlanta, Georgia. The Braves are a member of the Eastern Division of Major League Baseball's National League. The Braves have played in Turner Field since 1997....

 pitcher Tom Glavine
Tom Glavine
Thomas Michael Glavine is a former Major League Baseball left-handed pitcher.With 164 victories during the 1990s, Glavine was the second winningest pitcher in the National League, second only to teammate Greg Maddux's 176...

 also made a career living on the outside corner of the plate using the circle changeup. Minnesota Twins
Minnesota Twins
The Minnesota Twins are a professional baseball team based in Minneapolis, Minnesota. They play in the Central Division of Major League Baseball's American League. The team is named after the Twin Cities area of Minneapolis and St. Paul. They played in Metropolitan Stadium from 1961 to 1981 and the...

 ace Frank Viola
Frank Viola
Frank John Viola, Jr. is a former starting pitcher in Major League Baseball who played for the Minnesota Twins , New York Mets , Boston Red Sox , Cincinnati Reds and Toronto Blue Jays . A three-time All-Star, he was named World Series MVP with the Twins in 1987 and won the AL Cy Young Award in 1988...

 also used the circle change to great effect. Former Atlanta Braves
Atlanta Braves
The Atlanta Braves are a professional baseball club based in Atlanta, Georgia. The Braves are a member of the Eastern Division of Major League Baseball's National League. The Braves have played in Turner Field since 1997....

 pitcher Charlie Leibrandt
Charlie Leibrandt
Charles Louis "Charlie" Leibrandt, Jr. is a former Major League Baseball pitcher who played from 1979 to 1993 for the Cincinnati Reds, Kansas City Royals, Atlanta Braves and Texas Rangers. Leibrandt was a productive pitcher throughout his 14 year career, and a member of the 1985 World Series...


threw a Circle changeup that was gripped using the index finger on the seam of the ball and the thumb on the side of the ball to "choke" the ball.
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