Tampa Bay Rays
Although they have not thrown an MLB pitch in 2023, Jalen Beeks threw 4,067 pitches that were tracked by the PITCHf/x system between 2018 and 2022, including pitches thrown in the MLB Regular Season and Spring Training. In 2022, they relied primarily on their Change (91mph) and Fourseam Fastball (95mph). He also rarely threw a Cutter (88mph) and Slider (83mph).
In 2022, compared to other LHP:
His change is thrown extremely hard, generates a very high amount of groundballs compared to other pitchers' changeups, has slight armside fade and has some natural sink to it. His fourseam fastball generates an extremely high number of swings & misses compared to other pitchers' fourseamers, is blazing fast and has much less armside movement than typical. His cutter generates an extremely high number of swings & misses compared to other pitchers' cutters, is an extreme flyball pitch compared to other pitchers' cutters, has slightly above average velo, has some natural sink and has strong cutting action. His slider (take this with a grain of salt because he's only thrown 15 of them in 2022) generates fewer whiffs/swing compared to other pitchers' sliders and has some two-plane movement.