Chicago Cubs
Antoine Kelly has thrown 2,615 pitches that have been tracked by the PITCHf/x system between 2023 and 2026, including pitches thrown in the MLB Regular Season and Spring Training. In 2026, they have relied primarily on their Slider (87mph) and Fourseam Fastball (97mph), also mixing in a Sinker (96mph) and Change (89mph). He also rarely throws a Curve (83mph).
In 2026, compared to other LHP:
Their slider is thrown extremely hard, sweeps across the zone, has much less depth than expected and results in more flyballs compared to other pitchers' sliders. Their fourseam fastball generates an extremely high number of swings & misses compared to other pitchers' fourseamers, has heavy sinking action, is thrown at a speed that's borderline unfair, has less armside movement than typical and results in somewhat more flyballs compared to other pitchers' fourseamers. Their sinker (take this with a grain of salt because they've only thrown 8 of them in 2026) is basically never swung at and missed compared to other pitchers' sinkers, is thrown at a speed that's borderline unfair, is an extreme flyball pitch compared to other pitchers' sinkers, has less armside run than typical and has some natural sinking action. Their change (take this with a grain of salt because they've only thrown 3 of them in 2026) is thrown extremely hard, is basically never swung at and missed compared to other pitchers' changeups, has surprising cut action, dives down out of the zone and is an extreme flyball pitch compared to other pitchers' changeups.