To make room on the roster, the team optioned reliever Enrique Burgos to Reno.
"We're excited to see him," Hale said of Bradley. "His outing was fantastic last time out, good reports so he'll get a shot and then we believe we'll have to make another move after the game to get another reliever in there."
So Bradley will be sent down after Monday's game?
"It's probably a spot start," Hale confirmed. "But you never know in this game."
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.