Jake Arrieta has thrown 23,757 pitches that have been tracked by the PITCHf/x system between 2008 and 2019, including pitches thrown in the MLB Regular Season, the MLB Postseason and Spring Training. In 2019, he has relied primarily on his Sinker (93mph), also mixing in a Change (88mph), Slider (90mph) and Curve (81mph). He also rarely throws a Fourseam Fastball (93mph).
Basic description of 2019 pitches compared to other RHP:
His sinker has slight armside run and has slightly above average velo. His change is thrown extremely hard, has an obvious armside fade, dives down out of the zone and results in many more groundballs compared to other pitchers' changeups. His slider is thrown extremely hard, has much less depth than expected, generates fewer whiffs/swing compared to other pitchers' sliders and results in somewhat more flyballs compared to other pitchers' sliders. His curve is basically never swung at and missed compared to other pitchers' curves, has a sharp downward bite, is slightly harder than usual and has slight glove-side movement. His fourseam fastball generates an extremely 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 essentially average velo.