San Diego Padres
Although they have not thrown an MLB pitch in 2024, Jake Arrieta threw 27,048 pitches that were tracked by the PITCHf/x system between 2010 and 2021, including pitches thrown in the MLB Regular Season, the MLB Postseason and Spring Training. In 2021, they relied primarily on their Sinker (91mph) and Slider (88mph), also mixing in a Curve (81mph) and Change (87mph). He also rarely threw a Fourseam Fastball (91mph).
In 2021, compared to other RHP:
Their sinker results in somewhat more flyballs compared to other pitchers' sinkers, has slight armside run and has some natural sinking action. Their slider is thrown extremely hard, generates fewer whiffs/swing compared to other pitchers' sliders, results in more flyballs compared to other pitchers' sliders and has less than expected depth. Their curve has a sharp downward bite, is slightly harder than usual and has slight glove-side movement. Their change is basically never swung at and missed compared to other pitchers' changeups, dives down out of the zone, is much firmer than usual, results in somewhat more groundballs compared to other pitchers' changeups and has slight armside fade. Their fourseam fastball (take this with a grain of salt because they've only thrown 1 of them in 2021) is basically never swung at and missed compared to other pitchers' fourseamers, is an extreme flyball pitch compared to other pitchers' fourseamers and has slightly below average velo.