The Orioles acquired left-handed pitcher Vidal Nuno from the Dodgers on Sunday in exchange for right-hander Ryan Moseley.
Nuno, 29, was 1-1 with a 3.53 ERA in 58 2/3 innings a year ago with the Mariners. He was traded from Seattle to Los Angeles in November for catcher Carlos Ruiz.
Nuno has a career 4.02 ERA in stints with the Mariners, D-backs and Yankees.
Moseley, 22, went 0-1 with a 3.20 ERA in 12 games with Class A Aberdeen last season.
In order to make room for Nuno on the 40-man roster, the Orioles designated left-handed pitcher T.