The move was made as right-hander Jason Hammel continues to battle back from a stomach ailment.
Hammel is 7-4 with a 5.24 ERA so far this season.
“He’s still pretty weak, but he’s getting better every day,” Orioles manager Buck Showalter said of Hammel, who has been sick since Friday.
“The good news is we got contingency things in place,” Showalter said. “People that are capable of doing well. We got [Chris Tillman] there Wednesday and the off-day there [on Thursday]. I don’t think you are looking at DL with [Hammel]. Obviously you are going to have some backdate there, [but] you don’t want to lose him for six or seven days if you don’t have to. The other problem, too, if you put him out there and he’s weak and only able to go an inning or two, then you are really putting some people in harm’s way.”
Tillman is set to go on Wednesday afternoon, and it’s likely that the club will have Hammel make his next start following Thursday’s day off.
Hammel was originally supposed to start Monday’s game, but Jake Arrieta got the nod in his place. The Orioles optioned Arrieta to Triple-A Norfolk following Monday’s 5-1 loss.
Britton will be making his second big league start this year on Tuesday night. In 11 starts for the Norfolk Tides, Britton has a 3.28 ERA and has allowed 28 runs (22 earned) on 65 hits and 23 walks. He has struck out 44 over 60 1/3 innings.