Although they have not thrown an MLB pitch in 2023, Logan Allen threw 2,257 pitches that were tracked by the PITCHf/x system between 2019 and 2022, including pitches thrown in the MLB Regular Season and Spring Training. In 2022, they relied primarily on their Fourseam Fastball (92mph) and Slider (81mph), also mixing in a Change (84mph) and Curve (77mph). He also rarely threw a Sinker (90mph) and Cutter (86mph).
In 2022, compared to other LHP:
His fourseam fastball has some natural sinking action, has essentially average velo and has slightly less natural movement than typical. His slider sweeps across the zone, has exceptional depth and results in somewhat more flyballs compared to other pitchers' sliders. His change has surprising cut action, generates a high number of swings & misses compared to other pitchers' changeups, is slightly firmer than usual and has some natural sink to it. His curve is basically never swung at and missed compared to other pitchers' curves, has a sharp downward bite and has slight glove-side movement. His sinker generates an extremely high number of swings & misses compared to other pitchers' sinkers, is an extreme flyball pitch compared to other pitchers' sinkers, has surprisingly little armside run and has some natural sinking action. His cutter has heavy sink, has extreme cut action, is an extreme flyball pitch compared to other pitchers' cutters and generates fewer whiffs/swing compared to other pitchers' cutters.