Oakland Athletics
Although they have not thrown an MLB pitch in 2024, Ryan Castellani threw 1,830 pitches that were tracked by the PITCHf/x system between 2017 and 2023, including pitches thrown in the MLB Regular Season, The World Baseball Classic and Spring Training. In 2023, they relied primarily on their Slider (85mph) and Sinker (92mph), also mixing in a Change (85mph). He also rarely threw a Fourseam Fastball (92mph).
In 2023, compared to other RHP:
Their slider is basically never swung at and missed compared to other pitchers' sliders, results in many more groundballs compared to other pitchers' sliders and has short glove-side cut. Their sinker has an obvious tail, is an extreme flyball pitch compared to other pitchers' sinkers and has some natural sinking action. Their change (take this with a grain of salt because they've only thrown 7 of them in 2023) has an obvious armside fade, results in more flyballs compared to other pitchers' changeups and has some natural sink to it. Their fourseam fastball (take this with a grain of salt because they've only thrown 3 of them in 2023) is basically never swung at and missed compared to other pitchers' fourseamers, is an extreme flyball pitch compared to other pitchers' fourseamers, has some natural sinking action, has essentially average velo and has slight armside run.