Jake Diekman

Chicago White Sox

Pitch Repertoire At-A-Glance

Although they have not thrown an MLB pitch in 2023, Jake Diekman threw 9,796 pitches that were tracked by the PITCHf/x system between 2012 and 2022, including pitches thrown in the MLB Regular Season and Spring Training. In 2022, they relied primarily on their Fourseam Fastball (96mph) and Slider (81mph), also mixing in a Sinker (95mph). He also rarely threw a Change (86mph).


In 2022, compared to other LHP:
His fourseam fastball generates an extremely high number of swings & misses compared to other pitchers' fourseamers, has heavy sinking action, is blazing fast, results in somewhat more groundballs compared to other pitchers' fourseamers and has slight armside run. His slider sweeps across the zone, results in somewhat more flyballs compared to other pitchers' sliders and has some two-plane movement. His sinker is a real worm killer that generates an extreme number of groundballs compared to other pitchers' sinkers, generates a high number of swings & misses compared to other pitchers' sinkers, is blazing fast, has slight armside run and has some natural sinking action. His change (take this with a grain of salt because he's only thrown 19 of them in 2022) is basically never swung at and missed compared to other pitchers' changeups, dives down out of the zone, is an extreme flyball pitch compared to other pitchers' changeups and is much firmer than usual.