Boston Red Sox
James Paxton has thrown 17,065 pitches that have been tracked by the PITCHf/x system between 2013 and 2026, including pitches thrown in the MLB Regular Season, The World Baseball Classic and Spring Training. In 2026, they have relied primarily on their Fourseam Fastball (94mph) and Curve using a Knuckle Curve grip (82mph), also mixing in a Slider (84mph) and Sinker (93mph). He also rarely throws a Change (85mph).
In 2026, compared to other LHP:
Their fourseam fastball generates more whiffs/swing compared to other pitchers' fourseamers, has some natural sinking action and has well above average velo. Their curve using a knuckle curve grip is thrown extremely hard and has primarily 12-6 movement. Their slider generates more whiffs/swing compared to other pitchers' sliders, results in more flyballs compared to other pitchers' sliders and has some two-plane movement. Their sinker (take this with a grain of salt because they've only thrown 9 of them in 2026) is an extreme flyball pitch compared to other pitchers' sinkers, has well above average velo, has less armside run than typical and has some natural sinking action. Their change (take this with a grain of salt because they've only thrown 2 of them in 2026) is basically never swung at and missed compared to other pitchers' changeups, is an extreme flyball pitch compared to other pitchers' changeups and is much firmer than usual.