Boston Red Sox
Zack Kelly has thrown 706 pitches that have been tracked by the PITCHf/x system between 2022 and 2024, including pitches thrown in the MLB Regular Season and Spring Training. In 2024, they have relied primarily on their Fourseam Fastball (97mph), Cutter (91mph) and Slider (82mph), also mixing in a Change (84mph).
In 2024, compared to other RHP:
Their fourseam fastball generates an extremely high number of swings & misses compared to other pitchers' fourseamers, is an extreme flyball pitch compared to other pitchers' fourseamers, has some natural sinking action and has well above average velo. Their cutter generates an extremely high number of swings & misses compared to other pitchers' cutters, has heavy sink and has slightly above average velo. Their slider sweeps across the zone, generates fewer whiffs/swing compared to other pitchers' sliders and has some two-plane movement. Their change has an obvious armside fade and dives down out of the zone.