Although they have not thrown an MLB pitch in 2023, Dillon Peters threw 3,639 pitches that were tracked by the PITCHf/x system between 2017 and 2022, including pitches thrown in the MLB Regular Season and Spring Training. In 2022, they relied primarily on their Change (85mph), Sinker (93mph) and Fourseam Fastball (93mph), also mixing in a Curve (77mph) and Slider (85mph).
In 2022, compared to other LHP:
His change generates a high number of swings & misses compared to other pitchers' changeups, results in many more groundballs compared to other pitchers' changeups and is slightly firmer than usual. His sinker has surprisingly little armside run, generates fewer whiffs/swing compared to other pitchers' sinkers and has slightly above average velo. His fourseam fastball has much less armside movement than typical and has slightly above average velo. His curve has sweeping glove-side movement, generates fewer whiffs/swing compared to other pitchers' curves and has a sharp downward bite. His slider is basically never swung at and missed compared to other pitchers' sliders, results in somewhat more flyballs compared to other pitchers' sliders and has some two-plane movement.