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

Examples of fastball in a Sentence

He struck him out with a fastball.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
With a devastating combination of cutters, sinkers and fastballs, the young right-hander has racked up 234 strikeouts, third in the AL behind Cleveland Guardians ace Gavin Williams (244) and likely Cy Young runner-up Dylan Cease (239). — Ryan Canfield Outkick, FOXNews.com, 24 Sep. 2026 And a review showed the fastball clipped the top of the strike zone. — Maddie Lee, Los Angeles Times, 24 Sep. 2026 With a four-seamer, a cutter and a sinker, Schlittler throws some variation of a fastball roughly 90% of the time, making his rise all the more impressive and unique. — Gary Phillips, New York Daily News, 24 Sep. 2026 After Sung-Mun Song struck out, Salas batted for Freddy Fermin and grounded a 0-2 fastball up the middle for San Diego’s 11th walk-off win of the year. — Miami Herald, 20 Sep. 2026 See All Example Sentences for fastball

Word History

First Known Use

1883, in the meaning defined above

Time Traveler
The first known use of fastball was in 1883

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Cite this Entry

“Fastball.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fastball. Accessed 26 Sep. 2026.

Kids Definition

: a baseball pitch thrown at full speed

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