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SHEBOYGAN, WI - AUGUST 14: Hiroshi Iwata of Japan speaks with the media after shooting a nine-under par 63 during the second round of the 2015 PGA Championship at Whistling Straits on August 14, 2015 in Sheboygan, Wisconsin. (Photo by Jamie Squire/Getty Images)

SHEBOYGAN, WI - AUGUST 14:  Hiroshi Iwata of Japan speaks with the media after shooting a nine-under par 63 during the second round of the 2015 PGA Championship at Whistling Straits on August 14, 2015 in Sheboygan, Wisconsin.  (Photo by Jamie Squire/Getty Images)