Seattle Mariners
Blas Castaño has thrown 3,498 pitches that have been tracked by the PITCHf/x system between 2021 and 2025, including pitches thrown in the MLB Regular Season, Spring Training and Fall/Winter Ball. In 2025, they have relied primarily on their Slider (82mph), Sinker (93mph) and Cutter (89mph), also mixing in a Change (88mph). He also rarely throws a Fourseam Fastball (94mph).
In 2025, compared to other RHP:
Their slider sweeps across the zone and results in more flyballs compared to other pitchers' sliders. Their sinker has heavy sinking action, has slight armside run and has slightly above average velo. Their cutter generates fewer whiffs/swing compared to other pitchers' cutters, results in more flyballs compared to other pitchers' cutters and has some natural sink. Their change dives down out of the zone, generates a very high amount of groundballs compared to other pitchers' changeups, generates fewer whiffs/swing compared to other pitchers' changeups, is much firmer than usual and has slight armside fade. Their fourseam fastball 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 essentially average velo and has slight armside run.