The Marlins are more concerned about a potential injury to Alvarez's shoulder than his elbow, Jon Morosi of FOX Sports reports. It was announced Sunday that Alvarez would undergo a precautionary MRI on his right elbow, but it appears he may be dealing with another injury. It's not clear if or how the elbow and shoulder injuries are connected, but expect the Marlins to provide an update on Alvarez's status after he is examined Monday.