Tampa Bay Rays
Jack Kartsonas has thrown 107 pitches that have been tracked by the PITCHf/x system between 2025 and 2026, all of them occuring in Spring Training. In 2026, they have relied primarily on their Fourseam Fastball (96mph) and Change (88mph), also mixing in a Slider (87mph).
In 2026, compared to other RHP:
Their fourseam fastball (take this with a grain of salt because they've only thrown 7 of them in 2026) is basically never swung at and missed compared to other pitchers' fourseamers, is an extreme flyball pitch compared to other pitchers' fourseamers, has some natural sinking action, has well above average velo and has slight armside run. Their change (take this with a grain of salt because they've only thrown 4 of them in 2026) generates an extremely high number of swings & misses compared to other pitchers' changeups, dives down out of the zone, is much firmer than usual and results in more flyballs compared to other pitchers' changeups. Their slider (take this with a grain of salt because they've only thrown 1 of them in 2026) is basically never swung at and missed compared to other pitchers' sliders, is an extreme flyball pitch compared to other pitchers' sliders, has primarily 12-6 movement and has some two-plane movement.