Reading Spin on Different Pitch Types (Baseball Specific)
Fastballs – Least likely pitch to be able to see seams. Will see mostly white ball.
Curveballs/Sliders/Cutters – Can often see a small red dot or circle.
Changeups/Sinkers – May be able to see more seams than on a straight, four-seam fastball. Spin may look less tight and uniform than the fastball or breaking ball.
Splitters – May see a “knuckleball” look, as it has very little spin.