Though Niese missed significant time this spring with left elbow and shoulder issues, and after sitting out nearly two months last season with a partially torn left rotator cuff, he is not concerned that issues will keep resurfacing.
"I'm not worried at all," Niese said. "I've got a good workout routine. I'm not worried. It's all behind me."
Anthony DiComo is a reporter for MLB.com. Follow him on Twitter @AnthonyDicomo. This story was not subject to the approval of Major League Baseball or its clubs.