The D-backs acquired Reynolds last offseason from the Rockies, and he was outstanding for the first two months of 2013, posting a 1.98 ERA in 30 appearances with two saves, before straining his elbow.
Reynolds went on the disabled list on June 10 and there was hope he would be able to avoid Tommy John surgery and pitch again. But he had a setback in a rehab appearance in early September and was forced to undergo the surgery.
Reynolds is expected to miss most, if not all, of the 2014 season.
Steve Gilbert is a reporter for MLB.com. Read his blog, Inside the D-backs, and follow him on Twitter @SteveGilbertMLB. This story was not subject to the approval of Major League Baseball or its clubs.