Tampa Bay Rays
Jonathan Heasley has thrown 4,617 pitches that have been tracked by the PITCHf/x system between 2021 and 2026, including pitches thrown in the MLB Regular Season and Spring Training. In 2026, they have relied primarily on their Fourseam Fastball (93mph) and Slider (86mph), also mixing in a Change (85mph) and Curve (81mph).
In 2026, compared to other RHP:
Their fourseam fastball is a real worm killer that generates an extreme number of groundballs compared to other pitchers' fourseamers and has essentially average velo. Their slider results in many more groundballs compared to other pitchers' sliders and has some two-plane movement. Their change (take this with a grain of salt because they've only thrown 10 of them in 2026) is basically never swung at and missed compared to other pitchers' changeups, dives down out of the zone and results in more flyballs compared to other pitchers' changeups. Their curve (take this with a grain of salt because they've only thrown 9 of them in 2026) is basically never swung at and missed compared to other pitchers' curves, has primarily 12-6 movement, results in more flyballs compared to other pitchers' curves, has a sharp downward bite and is slightly harder than usual.