SOUTHPORT, ENGLAND - JULY 21: Paul Casey of England with his caddie John McLaren on the 5th hole during the second round of the 146th Open Championship at Royal Birkdale on July 21, 2017 in Southport, England. (Photo by Stuart Franklin/Getty Images)
SOUTHPORT, ENGLAND - JULY 21: Paul Casey of England with his caddie John McLaren on the 5th hole during the second round of the 146th Open Championship at Royal Birkdale on July 21, 2017 in Southport, England. (Photo by Stuart Franklin/Getty Images)