Chicago White Sox
Although they have not thrown an MLB pitch in 2023, Michael Kopech threw 3,461 pitches that were tracked by the PITCHf/x system between 2018 and 2022, all of them occuring in the MLB Regular Season. In 2022, they relied primarily on their Fourseam Fastball (95mph) and Slider (84mph), also mixing in a Curve (79mph). He also rarely threw a Change (85mph).
In 2022, compared to other RHP:
His fourseam fastball generates a high number of swings & misses compared to other pitchers' fourseamers, results in somewhat more flyballs compared to other pitchers' fourseamers, has slightly above average velo and has some added backspin. His slider has exceptional depth, generates fewer whiffs/swing compared to other pitchers' sliders and results in somewhat more flyballs compared to other pitchers' sliders. His curve results in more flyballs compared to other pitchers' curves. His change is basically never swung at and missed compared to other pitchers' changeups, results in more flyballs compared to other pitchers' changeups and is slightly firmer than usual.