Washington Nationals
Although they have not thrown an MLB pitch in 2024, Jeremy Hellickson threw 20,493 pitches that were tracked by the PITCHf/x system between 2010 and 2019, including pitches thrown in the MLB Regular Season and Spring Training. In 2019, they relied primarily on their Sinker (89mph) and Change (80mph), also mixing in a Cutter (86mph), Curve using a Knuckle Curve grip (74mph) and Fourseam Fastball (89mph).
In 2019, compared to other RHP:
Their sinker is basically never swung at and missed compared to other pitchers' sinkers, has below average velo, results in somewhat more flyballs compared to other pitchers' sinkers and has slight armside run. Their change has below average velo and has slight cut action. Their cutter is an extreme flyball pitch compared to other pitchers' cutters, has below average velo, generates fewer whiffs/swing compared to other pitchers' cutters, has good "rise" and has little cutting action. Their curve using a knuckle curve grip has an exceptional bite, has below average velo, generates fewer whiffs/swing compared to other pitchers' curves and has slight glove-side movement. Their fourseam fastball comes in below hitting speed, is an extreme flyball pitch compared to other pitchers' fourseamers, generates more whiffs/swing compared to other pitchers' fourseamers, has some natural sinking action and has slight armside run.