Oakland Athletics
Willie MacIver has thrown 18 pitches that have been tracked by the PITCHf/x system in 2025, all of them occuring in the MLB Regular Season. In 2025, they have relied primarily on their Fourseam Fastball (41mph).
In 2025, compared to other RHP:
Their fourseam fastball (take this with a grain of salt because they've only thrown 18 of them in 2025) comes in below hitting speed, has heavy sinking action, is a real worm killer that generates an extreme number of groundballs compared to other pitchers' fourseamers, is basically never swung at and missed compared to other pitchers' fourseamers and has slightly less natural movement than typical.