Although they have not thrown an MLB pitch in 2023, Anthony Castro threw 981 pitches that were tracked by the PITCHf/x system between 2020 and 2022, including pitches thrown in the MLB Regular Season and Spring Training. In 2022, they relied primarily on their Slider (84mph) and Fourseam Fastball (95mph), also mixing in a Sinker (96mph). He also rarely threw a Change (88mph).
In 2022, compared to other RHP:
His slider generates more whiffs/swing compared to other pitchers' sliders, results in many more groundballs compared to other pitchers' sliders, has short glove-side cut and has some two-plane movement. His fourseam fastball has heavy sinking action, has less armside movement than typical and has slightly above average velo. His sinker generates an extremely high number of swings & misses compared to other pitchers' sinkers, has heavy sinking action, is an extreme flyball pitch compared to other pitchers' sinkers and is blazing fast. His change (take this with a grain of salt because he's only thrown 13 of them in 2022) generates a high number of swings & misses compared to other pitchers' changeups, is much firmer than usual, results in more flyballs compared to other pitchers' changeups, has slight cut action and has some natural sink to it.