ST ANDREWS, SCOTLAND - JULY 13: Dustin Johnson of the United States answers questions during a news conference ahead of the 144th Open Championship at The Old Course on July 13, 2015 in St Andrews, Scotland. (Photo by Mike Ehrmann/Getty Images)
ST ANDREWS, SCOTLAND - JULY 13: Dustin Johnson of the United States answers questions during a news conference ahead of the 144th Open Championship at The Old Course on July 13, 2015 in St Andrews, Scotland. (Photo by Mike Ehrmann/Getty Images)