AUGUSTA, GA - APRIL 04: Dustin Johnson of the United States and caddie Austin Johnson walk to the second green during a practice round prior to the start of the 2017 Masters Tournament at Augusta National Golf Club on April 4, 2017 in Augusta, Georgia. (Photo by Andrew Redington/Getty Images)

AUGUSTA, GA - APRIL 04:  Dustin Johnson of the United States and caddie Austin Johnson walk to the second green during a practice round prior to the start of the 2017 Masters Tournament at Augusta National Golf Club on April 4, 2017 in Augusta, Georgia.  (Photo by Andrew Redington/Getty Images)