SHEBOYGAN, WI - AUGUST 13: Rory McIlroy of Northern Ireland hits his tee shot on the ninth hole during the first round of the 2015 PGA Championship at Whistling Straits on August 13, 2015 in Sheboygan, Wisconsin. (Photo by Kevin C. Cox/Getty Images)
SHEBOYGAN, WI - AUGUST 13: Rory McIlroy of Northern Ireland hits his tee shot on the ninth hole during the first round of the 2015 PGA Championship at Whistling Straits on August 13, 2015 in Sheboygan, Wisconsin. (Photo by Kevin C. Cox/Getty Images)