Jake Arrieta has thrown 18,062 pitches that have been tracked by the PITCHf/x system between 2008 and 2017, including pitches thrown in the MLB Regular Season, the MLB Postseason and Spring Training. In 2017, he has relied primarily on his Sinker (93mph), also mixing in a Curve (79mph), Slider (88mph), Change (87mph) and Fourseam Fastball (93mph).
Basic description of 2017 pitches compared to other RHP:
His sinker is a prototypical pitch with few remarkable qualities. His curve generates a high number of swings & misses compared to other pitchers' curves, has a sharp downward bite and has slight glove-side movement. His slider results in more flyballs compared to other pitchers' sliders and is much harder than usual. His change is much firmer than usual, results in many more groundballs compared to other pitchers' changeups, has slight armside fade and has some natural sink to it. His fourseam fastball has essentially average velo.