Although he has not thrown an MLB pitch in 2019, Roberto Osuna threw 4,066 pitches that were tracked by the PITCHf/x system between 2014 and 2018, including pitches thrown in the MLB Regular Season, the MLB Postseason and Fall/Winter Ball. In 2018, he relied primarily on his Fourseam Fastball (96mph) and Cutter (91mph), also mixing in a Slider (87mph), Change (84mph) and Sinker (95mph).
Basic description of 2018 pitches compared to other RHP:
His fourseam fastball has well above average velo, has slightly less natural movement than typical and has some added backspin. His cutter has extreme cut action, generates more whiffs/swing compared to other pitchers' cutters, results in many more groundballs compared to other pitchers' cutters, has well above average velo and has good "rise". His slider has short glove-side cut and is much harder than usual. His change generates a high number of swings & misses compared to other pitchers' changeups, has a lot of backspin and results in somewhat more groundballs compared to other pitchers' changeups. His sinker is basically never swung at and missed compared to other pitchers' sinkers, has well above average velo, has less armside run than typical and has little sinking action compared to a true sinker.