Andreoli, 28, hit .232 with a pair of doubles in 23 games for the Orioles after joining the major league team on Aug. 18.
The team was interested in his speed and minor league hitting track record from the Chicago Cubs’ system and then the Mariners’, but he struggled to break through a crowded outfield picture that also featured Cedric Mullins, DJ Stewart, Adam Jones and Joey Rickard.
Andreoli’s skill set was especially similar to Rickard’s, while the Orioles gave preference in playing time to homegrown players Mullins and Stewart down the stretch.
Andreoli was cleared off the roster as the team has to make room for as many as five players coming off the 60-day disabled list this week, including Mark Trumbo, Richard Bleier, Pedro Araujo, Austin Hays and Gabriel Ynoa.
The deadline for those moves is 5 p.m. Friday.