"Darren's been good for a while," Orioles manager Buck Showalter said of O'Day, who got a double-play ball to strand a pair of inherited runners in the eighth. "With Zach being out, we've had to maneuver around, try not to extend too many guys too much. But Darren had a couple days off, only a third of an inning, so we were able to extend him. He should be OK tomorrow."
With Britton -- who is slated to throw a rehab outing on Friday -- sidelined, Showalter has tried to use Brad Brach and O'Day in different games so he always has a closing option. Having all three healthy and at his disposal will make the O's bullpen even more intimidating to opponents.
O'Day, who was limited to just 34 appearances due to injury last year, posted sub-2 ERAs in 2015 and '16. He came on Tuesday in relief of Donnie Hart and, after retiring Tim Beckham on an inning-ending double play, pitched a scoreless ninth. Over his past five innings, O'Day has allowed just three hits and hasn't issued a walk.