Starting pitchers: Orioles Aaron Brooks (0-2, 6.63 ERA) vs. Red Sox RHP Rick Porcello (10-9, 5.67 ERA)
Roster moves: The Orioles activated outfielder DJ Stewart from the seven-day concussions injured list Friday and optioned right-hander Chandler Shepherd to Triple-A Norfolk. Stewart had been out since being hit on the head by a fly ball in left field Aug. 6. Shepherd allowed one run in four innings of relief in his major league debut Tuesday. The Orioles also announced right-hander Jimmy Yacabonis cleared waivers and was outrighted to Norfolk.