4-seam fastball grip Illustrates how to hold a baseball to throw a 4-seam fastball.

While a fastball spins from bottom to top involving a backspin, the curveball spins from top to bottom. Moreover, the leverage in a fastball comes from behind the top of the ball, whereas in a curveball, the leverage comes from in front of the ball. A four-seam grip is a type of baseball grip used…