two-seam fastball

noun

A pitch thrown with a grip in the "horseshoe" orientation of the ball, with the rotation at a slight angle resulting in less Magnus effect as compared to a four-seam fastball since only two of the ball's seams cross the flight path; the pitch is delivered with a similar velocity as a four-seam fastball, but has a degree of sink.

“His two-seamer has a heavy sink and keeps the infielders busy.”

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Meanings

nountwo-seam fastball (plural two-seam fastballs)

plural two-seam fastballs

  1. ball gamesA pitch thrown with a grip in the "horseshoe" orientation of the ball, with the rotation at a slight angle resulting in less Magnus effect as compared to a four-seam fastball since only two of the ball's seams cross the flight path; the pitch is delivered with a similar velocity as a four-seam fastball, but has a degree of sink.

    His two-seamer has a heavy sink and keeps the infielders busy.

Cite this entry
APA

two-seam fastball. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/two-seam%20fastball

MLA

“two-seam fastball.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/two-seam%20fastball. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “two-seam fastball,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/two-seam%20fastball.

Source: two-seam fastball on Wiktionary, CC BY-SA 4.0.