A plate was placed on the olecranon fracture (tip of the elbow), and no timetable has yet been given for Pollock's return, though last week the outfielder said he hoped to be back before the end of the regular season.
This was Pollock's second surgery on the elbow, as he also suffered a fracture in it in March 2010.
Steve Gilbert is a reporter for MLB.com. Follow him on Twitter @SteveGilbertMLB. This story was not subject to the approval of Major League Baseball or its clubs.