Non-MLB
Although they have not thrown an MLB pitch in 2024, Leo Rosales threw 1,476 pitches that were tracked by the PITCHf/x system between 2008 and 2010, including pitches thrown in the MLB Regular Season and Spring Training. In 2010, they relied primarily on their Fourseam Fastball (91mph) and Change (83mph), also mixing in a Slider (87mph). He also rarely threw a Curve (74mph).
In 2010, compared to other RHP:
Their fourseam fastball results in somewhat more flyballs compared to other pitchers' fourseamers and has slightly below average velo. Their change has surprising cut action. Their slider is an extreme flyball pitch compared to other pitchers' sliders, has much less depth than expected, is much harder than usual and has primarily 12-6 movement. Their curve (take this with a grain of salt because they've only thrown 1 of them in 2010) is basically never swung at and missed compared to other pitchers' curves, has primarily 12-6 movement, has below average velo and results in more flyballs compared to other pitchers' curves.