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Split-finger fastball

From Wikipedia, the free encyclopedia

A split-finger fastball or splitter is an off-speed pitch in baseball that initially looks to the batter like a fastball but then seems to drop suddenly. Derived from the forkball, it is so named because the pitcher puts the index and middle finger on different sides of the ball.[1]

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  • HOW TO THROW A SPLIT FINGER FASTBALL [Baseball Pitching Grips: The Split Finger Pitch]
  • How to Grip & Throw A Split-Finger Fastball
  • Forkball vs. Splitter - Which Pitch is Better? [Slip Pitch?]



The splitter grew out of a much older pitch, the forkball, which was first used in the major leagues in the 1920s.[2] The modern splitter is often credited to baseball coach Fred Martin, who threw the pitch in the minor leagues as a changeup of sorts. When a young Bruce Sutter returned from surgery to find his fastball had lost velocity, Martin taught Sutter the pitch.[3] Sutter's success as a closer helped popularize the pitch.

Another early proponent of the splitter was Roger Craig, a pitcher-turned-manager, in the 1980s. He taught it to a number of pitchers on the teams he coached, the Detroit Tigers and San Francisco Giants.[2] Longtime player and manager Mike Scioscia called the splitter "the pitch of the '80s."[1]

The splitter eventually lost popularity in MLB after concerns arose that extensive use of the pitch could rob pitchers of fastball speed[4] and increase injury risk[5] Several major league teams discourage pitching prospects from throwing or learning the pitch.[1] In 2011, only 15 starting pitchers used it as part of their regular repertoire.[6] Splitter usage has begun to see a resurgence in the 2020s, with little research indicating support for the increased injury risk, and the MLB success of Japanese splitter-throwers from NPB, where the splitter has long been a primary pitch, as key factors.[5]

Purpose and technique

The split-finger grip is similar to the forkball grip; however, the forkball is held farther back and wider between the fingers and is usually thrown with a wrist flip that makes it slower than the splitter.[7] The split-finger is often recommended as an alternative to breaking pitches to young players because of its simplicity and the significantly reduced risk of injury.

An off-speed pitch, the splitter is generally thrown slower than that pitcher's fastball. According to PITCHf/x, the average four-seam fastball from a right-handed pitcher in 2010 was 92 mph, whereas the average splitter was 85 mph and the average changeup 83 mph.[8]

The motion of a split-finger pitch is similar to the outlawed spitball and at one time the pitch was known as the "dry spitter". When thrown, the pitcher must emphasize the downward pull of the pitch at the end of his motion. Thrusting the hand and forearm downward causes reduced backspin relative to a fastball, thus giving the appearance of "drop off the table" movement from the pitch. When thrown correctly, the split-finger's apparent last-second drop causes many batters to hit the top half of the baseball, thereby inducing a ground ball. The split-finger fastball is a very effective pitch with runners on base; a common tactic is using the split-finger to cause the batter to hit into a double play.

Notable splitter pitchers

Bruce Sutter, a Hall of Fame inductee, was a dominant closer in the 1970s and '80s and made heavy use of the split-finger pitch. He won the 1979 Cy Young and became the only National League pitcher to lead the league in saves 5 times.

The split-finger was a dominant pitch for Ron Darling on the 1986 World Champion New York Mets staff.

David Cone was famous for his splitter, used most often in the middle and later part of his career. A major strikeout pitch for him, Cone would throw it harder like a fastball to get swinging strikes. He also was very effective in throwing it slower, using it as a changeup to throw off hitters' timing. Jack Morris learned the pitch from Roger Craig in 1980, and it became an effective "out" pitch for the Tigers' hurler. Mike Scott also learned the pitch from Craig after the 1984 season, and it turned his career around. He won the 1986 NL Cy Young award and posted a league-leading 306 strikeouts.

Randy Johnson developed a splitter later in his career after losing some of his fastball velocity.

Roger Clemens developed a splitter later in his career as well, using it frequently as a strikeout pitch.[9]

John Smoltz and Curt Schilling were also pitchers from the 1990s and early 2000s who used the splitter as a key pitch in their arsenals.

Shohei Ohtani currently uses his splitter as a strikeout pitch.

Detroit Tigers pitcher Casey Mize uses a hard splitter with excellent control as his strikeout pitch.[10]

Texas Rangers closer Aroldis Chapman also developed a splitter toward the tail end of his age 32 season. He threw the pitch about 12% of the time in April 2021, generating an 85.7% strikeout rate and a -6.7 run value/100 — one of the most effective pitches in his arsenal and in the major leagues as a whole.[11]

Cincinnati Reds reliever Fernando Cruz  uses the splitter as his strikeout pitch.


  1. ^ a b c "Split-Finger Fastball, Once Popular, Is Falling Away". New York Times. Associated Press. October 1, 2011. Retrieved September 17, 2012.
  2. ^ a b James, Bill; Neyer, Rob (June 15, 2004). "The Forkball Fast and Slow". The Neyer/James Guide to Pitchers: An Historical Compendium of Pitching, Pitchers, and Pitches. Simon and Schuster. pp. 45–51. ISBN 9780743261586. Retrieved July 2, 2012.
  3. ^ Fimrite, Ron (September 17, 1979). "This pitch in time saves nine". Sports Illustrated. Retrieved July 2, 2024.
  4. ^ Christensen, Joe (July 22, 2011). "Curve now takes a back seat to other breaking pitches". Star Tribune. Retrieved September 17, 2012.
  5. ^ a b Crizer, Zach (June 5, 2023). "Why the splitter could flip from baseball taboo to popular experiment for MLB pitchers". Yahoo! Sports. Retrieved May 5, 2024.
  6. ^ "Leaderboards". Baseball Prospectus. Retrieved September 17, 2012.
  7. ^ Ryan, Shane (June 12, 2012). "Forkball: The Other Forgotten Pitch". Retrieved March 24, 2022.
  8. ^ "League Average PITCHf/x Data –". Texas Leaguers. Retrieved July 2, 2012.
  9. ^ Candiotti, Tom (June 14, 2002). "Fastball, splitter key to Clemens' success". Retrieved July 2, 2012.
  10. ^ "Casey Mize Stats: Statcast, Visuals & Advanced Metrics". Retrieved April 22, 2024.
  11. ^ "Aroldis Chapman Stats: Statcast, Visuals & Advanced Metrics". Retrieved April 22, 2024.

Further reading

This page was last edited on 3 July 2024, at 00:39
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