Although he has not thrown an MLB pitch in 2017, Gerrit Cole threw 9,287 pitches that were tracked by the PITCHf/x system between 2011 and 2016, including pitches thrown in the MLB Regular Season, the MLB Postseason and Fall/Winter Ball. In 2016, he relied primarily on his Fourseam Fastball (96mph), also mixing in a Slider (88mph), Sinker (96mph), Curve (82mph) and Change (89mph).
Basic description of 2016 pitches compared to other RHP:
His fourseam fastball has well above average velo, results in somewhat more groundballs compared to other pitchers' fourseamers and has slight armside run. His slider is thrown extremely hard and is a real worm killer that generates an extreme number of groundballs compared to other pitchers' sliders. His sinker is blazing fast and has slight armside run. His curve generates more whiffs/swing compared to other pitchers' curves, is much harder than usual, results in somewhat more groundballs compared to other pitchers' curves and has slight glove-side movement. His change is thrown extremely hard, generates fewer whiffs/swing compared to other pitchers' changeups, has a lot of backspin and has slight armside fade.