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GULLANE, SCOTLAND - JULY 17: Rory McIlroy of Northern Ireland and Jordan Spieth of the United States walk along the fairway ahead of the 142nd Open Championship at Muirfield on July 17, 2013 in Gullane, Scotland. (Photo by Stuart Franklin/Getty Images)

GULLANE, SCOTLAND - JULY 17:  Rory McIlroy of Northern Ireland and Jordan Spieth of the United States walk along the fairway ahead of the 142nd Open Championship at Muirfield on July 17, 2013 in Gullane, Scotland.  (Photo by Stuart Franklin/Getty Images)