The Angels recalled Rosenberg from Triple-A Salt Lake on Monday.
Rosenberg will return to the major-league roster after being sent down to Salt Lake on Aug. 14. He posted a 3.73 ERA and 1.21 WHIP with 31 strikeouts over 31.1 innings in five starts since being optioned, but the southpaw could work out of the bullpen while he's back up with the Angels. The Angels optioned starter Caden Dana to Double-A Rocket City on Monday, but the club could roll with a five-man rotation over the final two weeks rather than having Rosenberg replace Dana as a sixth starter.