Dodgers reliever Tom Koehler was forced off the mound in the third inning of Friday’s Dodgers/White Sox game after suffering what appeared to be a right shoulder injury. While the extent of the injury has yet to be revealed, manager Dave Roberts said the right-hander felt some tightness in his biceps and will undergo an MRI.

It’s an alarming injury for any pitcher, but more so for Koehler, who has a history of shoulder injuries and was sidelined for nearly a month last season after experiencing a bout of bursitis in his right shoulder.