Although they have not thrown an MLB pitch in 2023, Keegan Thompson threw 2,843 pitches that were tracked by the PITCHf/x system between 2021 and 2022, all of them occuring in the MLB Regular Season. In 2022, they relied primarily on their Fourseam Fastball (94mph) and Cutter (90mph), also mixing in a Curve (82mph). He also rarely threw a Change (86mph), Sinker (93mph) and Slider (84mph).
In 2022, compared to other RHP:
His fourseam fastball has less armside movement than typical, has essentially average velo and results in somewhat more flyballs compared to other pitchers' fourseamers. His cutter has extreme cut action, has slightly above average velo and has some natural sink. His curve has a sharp downward bite and is slightly harder than usual. His change results in many more groundballs compared to other pitchers' changeups, is slightly firmer than usual and has slight armside fade. His sinker has less armside run than typical and results in somewhat more flyballs compared to other pitchers' sinkers. His slider sweeps across the zone, generates more whiffs/swing compared to other pitchers' sliders, results in somewhat more groundballs compared to other pitchers' sliders and has some two-plane movement.