Seattle Mariners
Diego Castillo has thrown 4,467 pitches that have been tracked by the PITCHf/x system between 2018 and 2023, including pitches thrown in the MLB Regular Season, the MLB Postseason, The World Baseball Classic and Spring Training. In 2023, they have relied primarily on their Slider (88mph) and Sinker (95mph), also mixing in a Change (90mph) and Fourseam Fastball (96mph).
In 2023, compared to other RHP:
His slider (take this with a grain of salt because he's only thrown 19 of them in 2023) is thrown extremely hard, is an extreme flyball pitch compared to other pitchers' sliders and has primarily 12-6 movement. His sinker (take this with a grain of salt because he's only thrown 12 of them in 2023) generates an extremely high number of swings & misses compared to other pitchers' sinkers, has heavy sinking action, has an obvious tail, is an extreme flyball pitch compared to other pitchers' sinkers and has well above average velo. His change (take this with a grain of salt because he's only thrown 3 of them in 2023) 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, has slight armside fade and has some natural sink to it. His fourseam fastball (take this with a grain of salt because he's only thrown 2 of them in 2023) has heavy sinking action, is basically never swung at and missed compared to other pitchers' fourseamers, is an extreme flyball pitch compared to other pitchers' fourseamers, has well above average velo and has slight armside run.