Colorado Rockies
Although they have not thrown an MLB pitch in 2026, Willi Castro threw 63 pitches that were tracked by the PITCHf/x system between 2023 and 2025, all of them occuring in the MLB Regular Season. In 2025, they relied primarily on their Change (37mph) and Fourseam Fastball (55mph).
In 2025, compared to other RHP:
Their change (take this with a grain of salt because they've only thrown 9 of them in 2025) comes in below hitting speed, is basically never swung at and missed compared to other pitchers' changeups, results in more flyballs compared to other pitchers' changeups and has some natural sink to it. Their fourseam fastball (take this with a grain of salt because they've only thrown 3 of them in 2025) comes in below hitting speed, 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 and has slight armside run.