The Oakland Athletics will wrap up their split squad Friday with a matchup against the Seattle Mariners. Mason Miller will make his spring debut for the A’s while Luis Castillo will get the start for Seattle.
Miller is a power right-hander who appeared in just five games total in 2022 due to injury. However, he finished the season in the Arizona Fall League where he made six starts while posting a 3.24 ERA to go along with 20 strikeouts in 16 2/3 innings.
With most of the starters in action in Mesa today against the White Sox, Oakland will send a prospect heavy lineup to Peoria against the Mariners.