Orioles closer Félix Bautista has significant swelling in his shoulder, which is hindering the club’s ability to diagnose what’s wrong.

Also activated on Monday afternoon was Keegan Akin, who’s been on the IL for about a month due to shoulder inflammation. As corresponding moves to get these players onto the roster, the Orioles also optioned reliever Yaramil Hiraldo to Triple-A Norfolk and designated catcher Jacob Stallings for assignment.