Definition of "two-seam fastball" []

• 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. (noun)

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• "After working the count to 2-1, Jeter brought a roar to the bar and all of Philadelphia when he rapped a two-seam fastball on the ground to Jimmy Rollins, who started a 6-4-3 double play."