Although they have not thrown an MLB pitch in 2023, Joel Kuhnel threw 1,180 pitches that were tracked by the PITCHf/x system between 2019 and 2022, including pitches thrown in the MLB Regular Season and Spring Training. In 2022, they relied primarily on their Slider (87mph), Sinker (96mph) and Fourseam Fastball (96mph), also mixing in a Splitter (90mph).
In 2022, compared to other RHP:
His slider is much harder than usual, results in somewhat more flyballs compared to other pitchers' sliders and has some two-plane movement. His sinker is blazing fast, results in many more groundballs compared to other pitchers' sinkers, has slight armside run and has some natural sinking action. His fourseam fastball generates an extremely high number of swings & misses compared to other pitchers' fourseamers, has heavy sinking action and has well above average velo. His splitter is thrown extremely hard.