Orioles right-handed reliever Stu Pomeranz is likely headed to the disabled list after injuring himself while preparing to enter the game before the seventh inning Sunday. “I was warming up, my first breaking ball, something popped up in my ribs,” said Pomeranz, who had previously thrown seven or eight fastballs. “So we don’t know what it is yet. I have to get an MRI tomorrow. Find out more.” The Orioles are initially calling it a strained left oblique and a 15-day disabled list stint is expected.