Although he has not thrown an MLB pitch in 2015, Gerrit Cole threw 4,130 pitches that were tracked by the PITCHf/x system between 2011 and 2014, including pitches thrown in the MLB Regular Season, the MLB Postseason and Fall/Winter Ball. In 2014, he relied primarily on his Fourseam Fastball (97mph), also mixing in a Curve (85mph), Slider (87mph), Sinker (96mph) and Change (88mph).
Basic description of 2014 pitches compared to other RHP:
His fourseam fastball has an obvious tail, generates a very high amount of groundballs compared to other pitchers' fourseamers, is blazing fast and has some natural sinking action. His curve is thrown extremely hard, results in many more groundballs compared to other pitchers' curves and has little depth. His slider generates more whiffs/swing compared to other pitchers' sliders, results in many more groundballs compared to other pitchers' sliders, is much harder than usual and has some two-plane movement. His sinker is blazing fast. His change is much firmer than usual, results in somewhat more flyballs compared to other pitchers' changeups and has slight armside fade.