the thing that every great pitcher needs is control and command of 3 pitches. 1. Able to command your four seam fastball. 2. command and movement of some sort of breaking pitch such as curveball, slider, or 12-6 curveball. 3. You command of an off speed pitch such as change up, circle change up, or forkball. Then you can add one or two more pitches that you can command suck as splitter, sinker, cutter, screwball, or two seam fastball.