Philadelphia Phillies
Josh Walker has thrown 2,753 pitches that have been tracked by the PITCHf/x system between 2022 and 2025, including pitches thrown in the MLB Regular Season, The World Baseball Classic and Spring Training. In 2025, they have relied primarily on their Slider (83mph) and Fourseam Fastball (93mph), also mixing in a Sinker (93mph). He also rarely throws a Change (86mph) and Splitter (81mph).
In 2025, compared to other LHP:
Their slider has short glove-side cut and has some two-plane movement. Their fourseam fastball generates an extremely high number of swings & misses compared to other pitchers' fourseamers, has much less armside movement than typical, has some natural sinking action and has slightly above average velo. Their sinker is a real worm killer that generates an extreme number of groundballs compared to other pitchers' sinkers, has less armside run than typical, has slightly above average velo and has some natural sinking action. Their change is a real worm killer that generates an extreme number of groundballs compared to other pitchers' changeups, generates fewer whiffs/swing compared to other pitchers' changeups, is much firmer than usual and has some natural sink to it. Their splitter (take this with a grain of salt because they've only thrown 4 of them in 2025) comes in below hitting speed, is basically never swung at and missed compared to other pitchers' splitters and is an extreme flyball pitch compared to other pitchers' splitters.