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The Secret Weapon Hidden in Every Baseball

Close-up of a baseball showing raised red seams used to control pitch movement

It’s not just how hard a pitcher throws—it’s how the ball spins. The raised seams on a baseball create tiny disruptions in the air, guiding how the ball moves through space.


That’s how a curveball dives, a slider zips sideways, and a fastball appears to rise. Even weirder? Some newer pitch types behave in ways science didn’t fully understand until recently—thanks to something called a seam-shifted wake. It’s physics, spin, and strategy, all stitched into 108 red threads.

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