Non-MLB
Although they have not thrown an MLB pitch in 2024, Justin Grimm threw 6,698 pitches that were tracked by the PITCHf/x system between 2012 and 2022, including pitches thrown in the MLB Regular Season, the MLB Postseason and Spring Training. In 2022, they relied primarily on their Slider (82mph) and Fourseam Fastball (93mph), also mixing in a Curve (82mph).
In 2022, compared to other RHP:
Their slider sweeps across the zone, has exceptional depth and results in somewhat more flyballs compared to other pitchers' sliders. Their fourseam fastball has essentially average velo, has slightly less natural movement than typical and has some added backspin. Their curve generates a very high amount of groundballs compared to other pitchers' curves, is much harder than usual and has a sharp downward bite.