"These guys have been good relievers in the past," general manager Mike Hazen said. "Some have had ups and downs over the last year, some I don't know why they were still out there. We feel good about this group given their history, given their success pitching late in games."
The veterans add depth to what had been a very young group of relievers competing for spots on the roster. Only three teams in the National League had a worse bullpen ERA than the D-backs' 4.94 mark last year.
Steve Gilbert has covered the D-backs for MLB.com since 2001. Follow him on Twitter @SteveGilbertMLB. This story was not subject to the approval of Major League Baseball or its clubs.