Non-MLB
Kevin Kelly has thrown 224 pitches that have been tracked by the PITCHf/x system between 2023 and 2026, including pitches thrown in The World Baseball Classic and Fall/Winter Ball. In 2026, they have relied primarily on their Slider (82mph), also mixing in a Sinker (90mph), Curve (76mph), Fourseam Fastball (91mph) and Change (82mph).
In 2026, compared to other RHP:
Their slider generates fewer whiffs/swing compared to other pitchers' sliders, has short glove-side cut and results in somewhat more groundballs compared to other pitchers' sliders. Their sinker (take this with a grain of salt because they've only thrown 14 of them in 2026) is basically never swung at and missed compared to other pitchers' sinkers, is an extreme flyball pitch compared to other pitchers' sinkers, has slight armside run and has slightly below average velo. Their curve (take this with a grain of salt because they've only thrown 11 of them in 2026) is basically never swung at and missed compared to other pitchers' curves, results in more flyballs compared to other pitchers' curves, has a sharp downward bite, has slight glove-side movement and has slightly below average velo. Their fourseam fastball (take this with a grain of salt because they've only thrown 8 of them in 2026) is an extreme flyball pitch compared to other pitchers' fourseamers and has slightly below average velo. Their change (take this with a grain of salt because they've only thrown 5 of them in 2026) is basically never swung at and missed compared to other pitchers' changeups, has an obvious armside fade, results in more flyballs compared to other pitchers' changeups and has some natural sink to it.