GULLANE, SCOTLAND - JULY 18: Webb Simpson of the United States, Jamie Donaldson of Wales and Branden Grace of South Africa walk off the 12th tee with their caddies during the first round of the 142nd Open Championship at Muirfield on July 18, 2013 in Gullane, Scotland. (Photo by Rob Carr/Getty Images)
British Open - First round action
The British Open is underway at Muirfield. Catch all of the photos on Yahoo! Sports.