DENVER >> Dodgers pitcher Paco Rodriguez doesn't need surgery. That was the good news to emerge from an MRI on Rodriguez's left elbow on Monday.But manager Don Mattingly was also careful to say only that the MRI revealed no changes from an initial MRI on the same elbow. If that sounds familiar, it's the same line the Dodgers used when describing an MRI on Hyun-Jin Ryu's left shoulder in spring training.