OAKVILLE, ON - JULY 28: Dustin Johnson of the United States lines up a putt on the 16th hole during the second round of the RBC Canadian Open at Glen Abbey Golf Club on July 28, 2017 in Oakville, Canada. (Photo by Minas Panagiotakis/Getty Images)
OAKVILLE, ON - JULY 28: Dustin Johnson of the United States lines up a putt on the 16th hole during the second round of the RBC Canadian Open at Glen Abbey Golf Club on July 28, 2017 in Oakville, Canada. (Photo by Minas Panagiotakis/Getty Images)