fast·​ball | \ ˈfas(t)-ˌbȯl How to pronounce fastball (audio) \

Definition of fastball

: a baseball pitch thrown at full speed and often appearing to rise slightly as it nears the plate

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Other Words from fastball

fastballer \ ˈfas(t)-​ˌbȯ-​lər How to pronounce fastballer (audio) \ noun

Examples of fastball in a Sentence

He struck him out with a fastball.

Recent Examples on the Web

Trevor Cahill, pitching his second inning in relief, threw an 88 mph cut fastball to Mookie Betts with two outs in the 15th. Los Angeles Times, "Angels lose to Red Sox, 7-6, in extra innings," 31 Aug. 2019 Durable but not overused, front-line stuff (especially the 97 mph fastball and wicked 89 mph slider). Gary Peterson, The Mercury News, "Gerrit Cole: 5 reasons plum of the free agent class might pick the Giants," 29 Aug. 2019 The right fielder, who leads Miami in nearly every statistical category, took a 93.9 mph fastball from Vince Velasquez off his left hand with the bases loaded in the third inning. Wells Dusenbury,, "Marlins HR leader Brian Anderson likely done for season after fracturing left hand," 24 Aug. 2019 But watching Harvey end his second big league relief appearance with a 100 mph fastball and get his first major league victory Tuesday night had to be chicken soup for the soul of their beleaguered fan base. Peter Schmuck,, "Schmuck: Orioles’ arrival of Hunter Harvey, early progress of Adley Rutschman make rebuild more bearable," 22 Aug. 2019 The Met ace gave up nine hits over five innings, including a bomb from defensive-minded catcher Jorge Alfaro, who took a low 94 mph fastball deep into centerfield. Bradford William Davis,, "Jacob deGrom’s unhittable slider has him back in Cy Young conversation," 12 Aug. 2019 Colon rarely deviated from variations of his fastball, and Wheeler acknowledged trouble with his breaking pitches in last Tuesday’s start against the Marlins. Joe Lemire, New York Times, "The Mets’ Latest August Run Stalls, but Optimism Abounds," 11 Aug. 2019 Jones was hit by a 95 mph fastball from Royals right-hander Jorge Lopez. Anthony Fenech, Detroit Free Press, "Detroit Tigers' JaCoby Jones leaves after getting hit by pitch on left wrist," 8 Aug. 2019 Diaz ripped a 97 mph fastball from deGrom over the right field wall for his first major league hit — and his first major league home run. Steve Gardner, USA TODAY, "As broadcasters interview his parents, Marlins rookie Isan Diaz homers in his MLB debut," 5 Aug. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'fastball.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of fastball

1899, in the meaning defined above

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Statistics for fastball

Last Updated

7 Sep 2019

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Time Traveler for fastball

The first known use of fastball was in 1899

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More Definitions for fastball



English Language Learners Definition of fastball

baseball : a pitch that is thrown at full speed : a very fast pitch

More from Merriam-Webster on fastball

Rhyming Dictionary: Words that rhyme with fastball Encyclopedia article about fastball

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concealment of treason or felony

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