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ST ANDREWS, SCOTLAND - JULY 16: Phil Mickelson of the United States reacts after missing a birdie putt on the 14th green during the first round of the 144th Open Championship at The Old Course on July 16, 2015 in St Andrews, Scotland. (Photo by Warren Little/R&A/R&A via Getty Images)

ST ANDREWS, SCOTLAND - JULY 16: Phil Mickelson of the United States reacts after missing a birdie putt on the 14th green during the first round of the 144th Open Championship at The Old Course on July 16, 2015 in St Andrews, Scotland. (Photo by Warren Little/R&A/R&A via Getty Images)
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R & A Warren Little/R&A