Seattle Mariners
Jesse Hahn has thrown 6,922 pitches that have been tracked by the PITCHf/x system between 2014 and 2025, including pitches thrown in the MLB Regular Season and Spring Training. In 2025, they have relied primarily on their Sinker (95mph), also mixing in a Slider (82mph) and Curve (79mph). He also rarely throws a Change using a Circle Change grip (87mph) and Fourseam Fastball (95mph).
In 2025, compared to other RHP:
Their sinker has heavy sinking action, has an obvious tail, has well above average velo and results in somewhat more groundballs compared to other pitchers' sinkers. Their slider generates an extremely high number of swings & misses compared to other pitchers' sliders, sweeps across the zone, has exceptional depth and results in many more groundballs compared to other pitchers' sliders. Their curve has sweeping glove-side movement, has a sharp downward bite and results in somewhat more groundballs compared to other pitchers' curves. Their change using a circle change grip has surprising cut action, dives down out of the zone and is much firmer than usual. Their fourseam fastball (take this with a grain of salt because they've only thrown 10 of them in 2025) generates an extremely high number of swings & misses compared to other pitchers' fourseamers, has heavy sinking action, has an obvious tail, is an extreme flyball pitch compared to other pitchers' fourseamers and has slightly above average velo.