Non-MLB
Diego Castillo has thrown 6,947 pitches that have been tracked by the PITCHf/x system between 2018 and 2025, including pitches thrown in the MLB Regular Season, the MLB Postseason, The World Baseball Classic, Spring Training and Fall/Winter Ball. In 2025, they have relied primarily on their Sinker (96mph) and Slider (87mph), also mixing in a Fourseam Fastball (96mph). He also rarely throws a Change (91mph).
In 2025, compared to other RHP:
Their sinker generates an extremely high number of swings & misses compared to other pitchers' sinkers, has heavy sinking action, is blazing fast, results in somewhat more flyballs compared to other pitchers' sinkers and has slight armside run. Their slider generates more whiffs/swing compared to other pitchers' sliders, results in more flyballs compared to other pitchers' sliders, is much harder than usual and has some two-plane movement. Their fourseam fastball has heavy sinking action, is a real worm killer that generates an extreme number of groundballs compared to other pitchers' fourseamers, generates more whiffs/swing compared to other pitchers' fourseamers, has well above average velo and has slight armside run. Their change (take this with a grain of salt because they've only thrown 1 of them in 2025) is thrown extremely hard, is basically never swung at and missed compared to other pitchers' changeups, results in more flyballs compared to other pitchers' changeups and has some natural sink to it.