San Diego Padres
Stephen Kolek has thrown 2,757 pitches that have been tracked by the PITCHf/x system between 2023 and 2025, including pitches thrown in the MLB Regular Season, The World Baseball Classic, Spring Training and Fall/Winter Ball. In 2025, they have relied primarily on their Sinker (94mph), Fourseam Fastball (95mph) and Slider (84mph), also mixing in a Cutter (91mph) and Change (87mph).
In 2025, compared to other RHP:
Their sinker has heavy sinking action, generates a very high amount of groundballs compared to other pitchers' sinkers and has well above average velo. Their fourseam fastball has heavy sinking action, generates a very high amount of groundballs compared to other pitchers' fourseamers and has slightly above average velo. Their slider has short glove-side cut and has some two-plane movement. Their cutter is a real worm killer that generates an extreme number of groundballs compared to other pitchers' cutters, has well above average velo and has some natural sink. Their change is basically never swung at and missed compared to other pitchers' changeups, dives down out of the zone, is much firmer than usual and results in many more groundballs compared to other pitchers' changeups.