Although he has not thrown an MLB pitch in 2020, Yu Darvish threw 18,099 pitches that were tracked by the PITCHf/x system between 2009 and 2019, including pitches thrown in the MLB Regular Season, the MLB Postseason, The World Baseball Classic and Spring Training. In 2019, he relied primarily on his Slider (85mph) and Fourseam Fastball (94mph), also mixing in a Sinker (94mph), Curve (77mph), Splitter (89mph) and Cutter (91mph). He also rarely threw a Change (91mph) and Slow Curve (69mph).
Basic description of 2019 pitches compared to other RHP:
His slider has short glove-side cut and has some two-plane movement. His fourseam fastball generates an extremely high number of swings & misses compared to other pitchers' fourseamers, has less armside movement than typical, results in somewhat more flyballs compared to other pitchers' fourseamers and has slightly above average velo. His sinker has well above average velo and has less armside run than typical. His curve has a sharp downward bite and has slight glove-side movement. His splitter is thrown extremely hard, has surprising cut action, generates more whiffs/swing compared to other pitchers' splitters and results in somewhat more groundballs compared to other pitchers' splitters. His cutter has well above average velo, has some natural sink and has strong cutting action. His change is thrown extremely hard, results in many more groundballs compared to other pitchers' changeups, has slight cut action and has some natural sink to it. His slow curve (take this with a grain of salt because he's only thrown 6 of them in 2019) is a real yakker that's separated from his other curveball due to its big drop and slow speed.