Diamondback's ace Brandon Webb felt discomfort in his right shoulder during a throwing session. D-Backs manager A.J. Hinch said, "He didn't feel very good. So it's a bad sign for us. We were so positive about where he was in his rehabilitation. He'll have to get further tests and see our doctors." Webb's setback may prevent him from pitching again this season. He made his only start of the year on Opening Day when he suffered a strained teres major muscle in his right shoulder. The setback ensures the Webb will not be traded this season.