This is how you throw a splitter: grip the ball like a forkball but not so deep in your fingers. By holding the ball in your fingers you use more finger force. This is very important in throwing a splitter.
Type of Pitches
Fastballs: Four-seam Fastball, Two-seam Fastball, Splitter, Cutter, Sinker, Forkball
Off speed: Changeup, Palmball, Screwball,Knuckleball
Breaking Pitches: Curveball, Slurve, Slider