Mitch Keller has thrown 1,622 pitches that have been tracked by the PITCHf/x system between 2019 and 2021, all of them occuring in the MLB Regular Season. In 2021, he has relied primarily on his Fourseam Fastball (95mph), also mixing in a Slider (88mph) and Curve (79mph). He also rarely throws a Change (91mph).
In 2021, compared to other RHP:
His fourseam fastball has some natural sinking action and has slightly above average velo. His slider is thrown extremely hard, is an extreme flyball pitch compared to other pitchers' sliders and has some two-plane movement. His curve has an exceptional bite and results in somewhat more flyballs compared to other pitchers' curves. His change is thrown extremely hard, is basically never swung at and missed compared to other pitchers' changeups, results in more flyballs compared to other pitchers' changeups and has slight armside fade.