Diamondbacks activate RHP Ryne Nelson off injured list

The Arizona Diamondbacks activated starting pitcher Ryne Nelson off the 15-day injured list ahead of Sunday's ballgame against the San Diego Padres at Chase Field. Arizona also optioned Brandon Hughes to the Reno Aces to keep the roster at the 40-man threshold. Nelson (right elbow contusion) will make his first start since he took a comebacker off the arm when he faced the San Francisco Giants on April 18.