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TROON, SCOTLAND - JULY 17: Henrik Stenson of Sweden and Phil Mickelson of the United States look thoughtful as they walk on the 12th hole during the final round on day four of the 145th Open Championship at Royal Troon on July 17, 2016 in Troon, Scotland. (Photo by Matthew Lewis/Getty Images)

TROON, SCOTLAND - JULY 17:  Henrik Stenson of Sweden and Phil Mickelson of the United States look thoughtful as they walk on the 12th hole during the final round on day four of the 145th Open Championship at Royal Troon on July 17, 2016 in Troon, Scotland.  (Photo by Matthew Lewis/Getty Images)