Niese pitched two innings before coming out of the game on Sunday. The pain is near the back of his elbow, not near his forearm, which could lead to Tommy John surgery (Rubin, March 16).
"It's the back of the elbow, which is good," Niese said. "I'm almost 100 percent sure it's nothing serious like Tommy John or anything. It's just a little discomfort. I wanted to go back out there. It's something that I could definitely pitch through.
This is Niese's second MRI this spring, after complaining of triceps pain and "dead arm" earlier this spring training.