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GULLANE, SCOTLAND - JULY 18: Billy Horschel of the United States reacts on the 2nd green during the first round of the 142nd Open Championship at Muirfield on July 18, 2013 in Gullane, Scotland. (Photo by Ian Walton/R&A/R&A via Getty Images)

Billy Horschel of the United States reacts on the 2nd green during the first round of the 142nd Open Championship at Muirfield on July 18, 2013 in Gullane, Scotland.