The Orioles designated Irvin for assignment Sunday.
Baltimore has now DFA'd Irvin for the second time this season. The Orioles previously made the transaction in late July, with the lefty ultimately clearing waivers and sticking around in the organization. He received the call back to Baltimore on Aug. 20, and Irvin made four appearances (two starts) during his latest stint in the majors while logging a 4.97 ERA, 1.42 WHIP and 10:4 K:BB in 12.2 innings. Right-hander Jacob Webb (elbow) was reinstated from the 15-day injured list to take Irvin's spot in the bullpen and on the 28-man active roster.