PGA Championship 2013 Leaderboard Day 2: Scores, Standings and Results

Kenny Dorset@kdorsetDirector of Social MediaAugust 9, 2013

ROCHESTER, NY - AUGUST 09:  Jason Dufner of the United States hits a shot to the 13th green during the second round of the 95th PGA Championship on August 9, 2013 in Rochester, New York.  (Photo by Stuart Franklin/Getty Images)
Stuart Franklin/Getty Images

Jason Dufner shoots a course-record 63 and leads the PGA Championship at 9-under par. 

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