Lance Berkman will undergo an MRI on his ailing right shoulder Wednesday. Berkman originally injured the shoulder on a swing Sunday and left Tuesday's game after feeling more discomfort. He is expected to receive an anti-inflammatory injection on Wednesday, which will likely sideline him for the next two or three days. "If they can pinpoint the muscle that is giving me trouble, they can inject it and it helps speed the recovery process," said Berkman. "Nobody thinks it's anything to be that concerned about. I think they're just going to look at it first and then they'll tell me what's the best thing to do." Jon Jay should fill in during his absence.