A slow pitch which moves erratically, made by releasing the ball from the knuckles of the first joints of the index and middle finger.
- He had pitched in high school and occasionally had thrown a knuckleball.
- Eddie Cicotte is thought to be the first major league pitcher to specialize in throwing the knuckleball.
- Sauveur throws a fastball, knuckleball, curveball and cutter, and he changes speeds with all of them.
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