Kelly left Monday's game in the third inning with an apparent injury, the Boston Globe's Peter Abraham reports. Kelly threw a pitch with the bases loaded in the third inning and catcher Ryan Hanigan immediately motioned toward the dugout, signifying a potential serious injury. Kelly went from the mound directly into the clubhouse with the athletic trainer. He was projected to be the No. 5 starter in Boston's rotation, and Steven Wright is the internal favorite to replace him. Should the injury end up being serous, the Cole Hamels trade rumors will pick up again, as starting rotation depth was already an issue for the Red Sox.