U.S. Open 2013 (51 images)

Gonzalo Fernandez-Castano watches his drive off of the 5th tee box, during the third round 113th U.S. Open Championship at Merion Golf Club in Ardmore, Pennsylvania on June 15, 2013. UPI/Kevin Dietsch

Charles Schwartzel reacts after hitting from a bunker on the 17th hole, during the third round 113th U.S. Open Championship at Merion Golf Club in Ardmore, Pennsylvania on June 15, 2013. UPI/Kevin Dietsch

Hunter Mahan lines up a putt on the 17th green, during the third round 113th U.S. Open Championship at Merion Golf Club in Ardmore, Pennsylvania on June 15, 2013. UPI/Kevin Dietsch

Luke Donals and a rules official look at his ball on the 18th fairway, during the third round 113th U.S. Open Championship at Merion Golf Club in Ardmore, Pennsylvania on June 15, 2013. UPI/Kevin Dietsch