Non-MLB
Although they have not thrown an MLB pitch in 2024, Harold Castro threw 110 pitches that were tracked by the PITCHf/x system between 2021 and 2023, all of them occuring in the MLB Regular Season. In 2023, they relied primarily on their Fourseam Fastball (61mph).
In 2023, compared to other RHP:
Their fourseam fastball comes in below hitting speed, has heavy sinking action, results in somewhat more flyballs compared to other pitchers' fourseamers and has slightly less natural movement than typical.