Non-MLB
Although they have not thrown an MLB pitch in 2025, Marcos Diplán threw 729 pitches that were tracked by the PITCHf/x system between 2021 and 2024, including pitches thrown in the MLB Regular Season and Fall/Winter Ball. In 2024, they relied primarily on their Fourseam Fastball (93mph) and Slider (81mph). He also rarely threw a Change (84mph).
In 2024, compared to other RHP:
Their fourseam fastball generates an extremely high number of swings & misses compared to other pitchers' fourseamers, is an extreme flyball pitch compared to other pitchers' fourseamers, has much less armside movement than typical and has essentially average velo. Their slider (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' sliders, has exceptional depth, is an extreme flyball pitch compared to other pitchers' sliders, has short glove-side cut and has below average velo. Their change (take this with a grain of salt because they've only thrown 1 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 and has a lot of backspin.