Tim Clark (R) of South Africa uses an anchored putter during practice before the US Open at Merion Golf Club on June 12, 2013 in Ardmore, Pennsylvania. AFP PHOTO/Brendan SMIALOWSKI (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)
Tim Clark (R) of South Africa uses an anchored putter during practice before the US Open at Merion Golf Club on June 12, 2013 in Ardmore, Pennsylvania. AFP PHOTO/Brendan SMIALOWSKI (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)