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ST ANDREWS, SCOTLAND - JULY 18: Dustin Johnson of the United States watches his tee shot on the 18th hole during the second round of the 144th Open Championship at The Old Course on July 18, 2015 in St Andrews, Scotland. (Photo by David Cannon/R&A/R&A via Getty Images)

ST ANDREWS, SCOTLAND - JULY 18: Dustin Johnson of the United States watches his tee shot on the 18th hole during the second round of the 144th Open Championship at The Old Course on July 18, 2015 in St Andrews, Scotland. (Photo by David Cannon/R&A/R&A via Getty Images)
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R & A David Cannon/R&A