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SOUTHPORT, ENGLAND - JULY 21: Jordan Spieth of the United States fist bumps his caddie Michael Greller on the 18th green during the second round of the 146th Open Championship at Royal Birkdale on July 21, 2017 in Southport, England. (Photo by Andrew Redington/Getty Images)

SOUTHPORT, ENGLAND - JULY 21: Jordan Spieth of the United States fist bumps his caddie Michael Greller on the 18th green during the second round of the 146th Open Championship at Royal Birkdale on July 21, 2017 in Southport, England. (Photo by Andrew Redington/Getty Images)
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