Although he has not thrown an MLB pitch in 2016, Gerrit Cole threw 7,362 pitches that were tracked by the PITCHf/x system between 2011 and 2015, including pitches thrown in the MLB Regular Season, the MLB Postseason and Fall/Winter Ball. In 2015, he relied primarily on his Fourseam Fastball (97mph) and Slider (88mph), also mixing in a Sinker (96mph) and Curve (82mph). He also rarely threw a Change (89mph).
Basic description of 2015 pitches compared to other RHP:
His fourseam fastball has some natural sinking action, has well above average velo, results in somewhat more groundballs compared to other pitchers' fourseamers and has slight armside run. His slider generates more whiffs/swing compared to other pitchers' sliders, is much harder than usual and has some two-plane movement. His sinker is blazing fast, results in many more groundballs compared to other pitchers' sinkers and has slight armside run. His curve has sweeping glove-side movement, is much harder than usual, has little depth and results in somewhat more flyballs compared to other pitchers' curves. His change is thrown extremely hard, is basically never swung at and missed compared to other pitchers' changeups, results in somewhat more groundballs compared to other pitchers' changeups and has slight armside fade.