The knuckleball is a baseball pitch that has little or no spin, inflicting it to flutter erratically on its solution to the plate. This makes it very tough for batters to hit, as they can not predict the place the ball will go.
Knuckleballs are thrown with a unfastened grip, and the pitcher doesn’t impart any spin on the ball. The ball is launched with the knuckles of the index and center fingers, and the dearth of spin causes the ball to wobble and flutter because it travels by way of the air.