Colorado Rockies
Seth Halvorsen has thrown 1,344 pitches that have been tracked by the PITCHf/x system between 2024 and 2026, including pitches thrown in the MLB Regular Season, The World Baseball Classic and Spring Training. In 2026, they have relied primarily on their Fourseam Fastball (99mph) and Slider (87mph), also mixing in a Change (90mph) and Sinker (97mph).
In 2026, compared to other RHP:
Their fourseam fastball is thrown at a speed that's borderline unfair, generates a very high amount of groundballs compared to other pitchers' fourseamers, has some natural sinking action and has slight armside run. Their slider generates a high number of swings & misses compared to other pitchers' sliders, is much harder than usual and has some two-plane movement. Their change is thrown extremely hard, generates fewer whiffs/swing compared to other pitchers' changeups and has some natural sink to it. Their sinker (take this with a grain of salt because they've only thrown 13 of them in 2026) generates an extremely high number of swings & misses compared to other pitchers' sinkers, is thrown at a speed that's borderline unfair, is an extreme flyball pitch compared to other pitchers' sinkers and has some natural sinking action.