Non-MLB
Although they have not thrown an MLB pitch in 2024, Jerome Williams threw 9,499 pitches that were tracked by the PITCHf/x system between 2007 and 2016, including pitches thrown in the MLB Regular Season and Spring Training. In 2016, they relied primarily on their Sinker (90mph) and Cutter (87mph), also mixing in a Change (84mph) and Fourseam Fastball (90mph). He also rarely threw a Slider (80mph) and Curve (73mph).
In 2016, compared to other RHP:
Their sinker is basically never swung at and missed compared to other pitchers' sinkers, has slight armside run, has slightly below average velo and has some natural sinking action. Their cutter generates an extremely high number of swings & misses compared to other pitchers' cutters, results in somewhat more flyballs compared to other pitchers' cutters, has slightly below average velo and has some natural sink. Their change results in somewhat more flyballs compared to other pitchers' changeups and has some natural sink to it. Their fourseam fastball has heavy sinking action, is an extreme flyball pitch compared to other pitchers' fourseamers and has slightly below average velo. Their slider (take this with a grain of salt because they've only thrown 8 of them in 2016) comes in below hitting speed, is basically never swung at and missed compared to other pitchers' sliders, has exceptional depth and is an extreme flyball pitch compared to other pitchers' sliders. Their curve (take this with a grain of salt because they've only thrown 2 of them in 2016) comes in below hitting speed, is basically never swung at and missed compared to other pitchers' curves and results in more flyballs compared to other pitchers' curves.