Boston Red Sox
Zack Kelly has thrown 1,317 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), Change (84mph) and Cutter (90mph).
In 2024, compared to other RHP:
Their fourseam fastball is a real worm killer that generates an extreme number of groundballs compared to other pitchers' fourseamers, generates more whiffs/swing compared to other pitchers' fourseamers, has some natural sinking action, has well above average velo and has slight armside run. Their slider sweeps across the zone. Their change has an obvious armside fade and dives down out of the zone. Their cutter has heavy sink, generates more whiffs/swing compared to other pitchers' cutters, results in many more groundballs compared to other pitchers' cutters and has slightly above average velo.