Non-MLB
Jonathan Hernández has thrown 3,998 pitches that have been tracked by the PITCHf/x system between 2019 and 2024, including pitches thrown in the MLB Regular Season, Spring Training and Fall/Winter Ball. In 2024, they have relied primarily on their Slider (88mph) and Sinker (97mph), also mixing in a Change (90mph). He also rarely throws a Fourseam Fastball (97mph).
In 2024, compared to other RHP:
Their slider generates more whiffs/swing compared to other pitchers' sliders and is much harder than usual. Their sinker is thrown at a speed that's borderline unfair, has an obvious tail and has some natural sinking action. Their change is thrown extremely hard, generates an extremely high number of swings & misses compared to other pitchers' changeups, has an obvious armside fade, results in somewhat more groundballs 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 13 of them in 2024) has heavy sinking action, is basically never swung at and missed compared to other pitchers' fourseamers, is an extreme flyball pitch compared to other pitchers' fourseamers, has well above average velo and has slight armside run.