The Orioles recalled Akin from Triple-A Norfolk on Wednesday.
He'll make his return to the big club as a replacement on the 26-man active roster for right-hander Grayson Rodriguez (shoulder), who was placed on the 15-day injured list. Before he was sent back to Triple-A on Aug. 1, Akin had struck out 12 while allowing one earned run on four hits and two walks over 10 innings across his last nine relief appearances, so his demotion likely had more to do with the fact that he had a minor-league option remaining rather than the Orioles being dissatisfied with his performance.