Angels designated LHP Adalberto Mejia for assignment.
Mejia gets the boot to open up a roster spot for catcher Jason Castro, whose one-year, $6.85 million free agent agreement with the Angels was made official on Tuesday. Mejia, 26, struggled to a 6.61 ERA and 1.72 WHIP in 31 1/3 innings of work last season between Minnesota, St. Louis, and Anaheim.