Boston Red Sox
Isaiah Campbell has thrown 1,919 pitches that have been tracked by the PITCHf/x system between 2023 and 2025, including pitches thrown in the MLB Regular Season and Spring Training. In 2025, they have relied primarily on their Cutter (87mph) and Fourseam Fastball (95mph), also mixing in a Curve (83mph), Slider (84mph) and Sinker (94mph).
In 2025, compared to other RHP:
Their cutter has heavy sink and has strong cutting action. Their fourseam fastball generates more whiffs/swing compared to other pitchers' fourseamers, has less armside movement than typical, results in many more groundballs compared to other pitchers' fourseamers, has some natural sinking action and has slightly above average velo. Their curve generates a high number of swings & misses compared to other pitchers' curves, generates a very high amount of groundballs compared to other pitchers' curves, is much harder than usual, has a sharp downward bite and has primarily 12-6 movement. Their slider sweeps across the zone and has exceptional depth. Their sinker generates an extremely high number of swings & misses compared to other pitchers' sinkers, has less armside run than typical, has slightly above average velo and has some natural sinking action.