St. Louis Cardinals
Riley O'Brien has thrown 2,157 pitches that have been tracked by the PITCHf/x system between 2021 and 2024, including pitches thrown in the MLB Regular Season and Spring Training. In 2024, they have relied primarily on their Sinker (97mph), Slider (83mph) and Cutter (90mph). He also rarely throws a Fourseam Fastball (96mph).
In 2024, compared to other RHP:
Their sinker is thrown at a speed that's borderline unfair, generates a high number of swings & misses compared to other pitchers' sinkers, generates a very high amount of groundballs compared to other pitchers' sinkers, has slight armside run and has some natural sinking action. Their slider sweeps across the zone, has exceptional depth and is an extreme flyball pitch compared to other pitchers' sliders. Their cutter generates an extremely high number of swings & misses compared to other pitchers' cutters, results in more flyballs compared to other pitchers' cutters, has slightly above average velo, has some natural sink and has strong cutting action. Their fourseam fastball (take this with a grain of salt because they've only thrown 10 of them in 2024) generates a high number of swings & misses compared to other pitchers' fourseamers, is an extreme flyball pitch compared to other pitchers' fourseamers, has some natural sinking action and has well above average velo.