Seattle Mariners
Although they have not thrown an MLB pitch in 2025, Leo Rivas threw 20 pitches that were tracked by the PITCHf/x system in 2024, all of them occuring in the MLB Regular Season. In 2024, they relied primarily on their Fourseam Fastball (46mph).
In 2024, compared to other RHP:
Their fourseam fastball comes in below hitting speed, has heavy sinking action, is basically never swung at and missed compared to other pitchers' fourseamers, is straight as an arrow and results in more flyballs compared to other pitchers' fourseamers.