There are 108 red stitches on each regulation major league baseball, and they're not just for decoration. They are what hold the leather of the baseball together, but they aren't just utilitarian either. Those 108 stitches, raised on the surface of the ball, play an important role in the game itself, as they affect how the ball moves toward the batter. The raised stitches increase the friction created as air passes around the ball, placing greater pressure on the top of the ball. This difference in pressure gives a pitch like the curve ball the movement it displays. A pitcher who can throw a good curve ball will give batters fits.
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