SHEBOYGAN, WI - AUGUST 14: Phil Mickelson of the United States waits on the 16th tee during the second round of the 2015 PGA Championship at Whistling Straits on August 14, 2015 in Sheboygan, Wisconsin. (Photo by Kevin C. Cox/Getty Images)
SHEBOYGAN, WI - AUGUST 14: Phil Mickelson of the United States waits on the 16th tee during the second round of the 2015 PGA Championship at Whistling Straits on August 14, 2015 in Sheboygan, Wisconsin. (Photo by Kevin C. Cox/Getty Images)