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 Buehler set the tone by striking out Brandon Lowe and Randy Arozarena on breaking pitches to end the first, then struck out Ji-Man Choi on a 97-mph fastball and Margot on a 99-mph pitch to open the second. Mark Gonzales,, "5 observations from Game 3 of the World Series, including the Los Angeles Dodgers’ unheralded hero and Walker Buehler’s dominance of the Tampa Bay Rays," 24 Oct. 2020 Came back with a 94.4-mph fastball that was fouled back. Bob Nightengale, USA TODAY, "Independent ball, a criminal record and a dream: Rays' Nick Anderson took 'crazy path' to the World Series," 23 Oct. 2020 On 3-2, Hendriks unleashed a howling, 98-mph fastball, near the top of the strike zone. Ron Kroichick,, "A’s closer Liam Hendriks takes old-school route to season-saving victory," 7 Oct. 2020 The Stable, as the Rays relievers are now known, should strike fear in the Yankees — and not the fear of being hit by a 98-mph fastball as was threatened by their manager last month. Kristie Ackert,, "Yankees need Adam Ottavino, bullpen to step it up against the Rays in the ALDS," 4 Oct. 2020 Castillo struck out Ozuna in a 10-pitch at-bat in the first inning with a 98-mph fastball at the top of the strike zone and struck him out again in the fourth inning. Bobby Nightengale, The Enquirer, "Cincinnati Reds eliminated from the playoffs without scoring a run; drop Game 2 to Atlanta Braves," 1 Oct. 2020 Byron Buxton experienced a mild headache Saturday morning, one day after being hit in the helmet by a 91-mph fastball. Phil Miller, Star Tribune, "Twins expect Byron Buxton and Josh Donaldson back for playoffs," 26 Sep. 2020 Boyd got strikeouts with his fastball, slider, curveball and changeup. Evan Petzold, Detroit Free Press, "Jordan Zimmermann's mind has helped Matthew Boyd. Can his arm help the Detroit Tigers?," 5 Sep. 2020 The current thinking is that strikeouts are an unavoidable consequence of the pursuit of power, a necessity in the face of vast improvements in fastball velocity, breaking ball movement and bullpen usage. Jared Diamond, WSJ, "Who Wins in October? Teams That Don’t Strike Out," 8 Oct. 2020

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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Time Traveler for fastball

Time Traveler

The first known use of fastball was in 1899

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Statistics for fastball

Last Updated

28 Oct 2020

Cite this Entry

“Fastball.” Dictionary, Merriam-Webster, Accessed 28 Oct. 2020.

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How to pronounce fastball (audio)

English Language Learners Definition of fastball

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

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