Non-MLB
Although they have not thrown an MLB pitch in 2025, Luis Santos threw 772 pitches that were tracked by the PITCHf/x system between 2017 and 2024, including pitches thrown in the MLB Regular Season and Fall/Winter Ball. In 2024, they relied primarily on their Fourseam Fastball (92mph) and Slider (83mph), also mixing in a Change (86mph).
In 2024, compared to other RHP:
Their fourseam fastball is basically never swung at and missed compared to other pitchers' fourseamers, results in more flyballs compared to other pitchers' fourseamers, has some natural sinking action, has essentially average velo and has slight armside run. Their slider (take this with a grain of salt because they've only thrown 13 of them in 2024) is an extreme flyball pitch compared to other pitchers' sliders. Their change (take this with a grain of salt because they've only thrown 8 of them in 2024) is basically never swung at and missed compared to other pitchers' changeups, results in more flyballs compared to other pitchers' changeups, is slightly firmer than usual, has slight armside fade and has some natural sink to it.