Non-MLB
Although they have not thrown an MLB pitch in 2024, Francis Martes threw 1,102 pitches that were tracked by the PITCHf/x system between 2017 and 2023, including pitches thrown in the MLB Regular Season and Fall/Winter Ball. In 2023, they relied primarily on their Fourseam Fastball (94mph) and Slider (82mph). He also rarely threw a Change (87mph).
In 2023, compared to other RHP:
Their fourseam fastball is basically never swung at and missed compared to other pitchers' fourseamers, has much less armside movement than typical, has some natural sinking action and has essentially average velo. Their slider is basically never swung at and missed compared to other pitchers' sliders, sweeps across the zone, has exceptional depth and results in more flyballs compared to other pitchers' sliders. Their change (take this with a grain of salt because they've only thrown 1 of them in 2023) is basically never swung at and missed compared to other pitchers' changeups, has surprising cut action, dives down out of the zone, is much firmer than usual and results in more flyballs compared to other pitchers' changeups.