Seattle Mariners
Although they have not thrown an MLB pitch in 2026, Miles Mastrobuoni threw 40 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 Fourseam Fastball (52mph).
In 2025, compared to other RHP:
Their fourseam fastball comes in below hitting speed and has slightly less natural movement than typical.