Dodgers first baseman James Loney was scheduled to have an MRI on his left knee on Saturday. He has been dealing with mild tightness in recent days. Los Angeles manager Don Mattingly said Loney first began to feel it during stretching exercises before Thursday night's game against Cincinnati. "He feels it when he gets to a certain point in his stretching," Mattingly said. "It seems like it [isn't serious], because he isn't feeling any pain, and he played last night. But these guys know their bodies pretty good, and with the knee, we want to be a little careful. We just want to find out what it is."