Zack Kelly

Boston Red Sox

Pitch Repertoire At-A-Glance

Zack Kelly has thrown 976 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 (96mph), Slider (82mph) and Change (84mph), also mixing in a Cutter (90mph).


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 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. Their cutter generates an extremely high number of swings & misses compared to other pitchers' cutters, has heavy sink and has slightly above average velo.