Mitch Keller has thrown 2,766 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 (94mph) and Slider (87mph), also mixing in a Curve (79mph). He also rarely throws a Change (90mph).
In 2021, compared to other RHP:
His fourseam fastball has some natural sinking action and has slightly above average velo. His slider has some two-plane movement. His curve has an exceptional bite and is basically never swung at and missed compared to other pitchers' curves. His change is thrown extremely hard, is basically never swung at and missed compared to other pitchers' changeups and results in many more groundballs compared to other pitchers' changeups.