The 1977 Open Championship was the 106th Open Championship, held 6–9 July on the Ailsa Course at Turnberry, Scotland. Tom Watson won the second of his five Open titles by one stroke over runner-up Jack Nicklaus. The two played together in the final two rounds and had separated themselves from the field under clear skies, leading this Open to be remembered as the "Duel in the Sun." This was the first Open ever held at Turnberry, which renamed its 18th hole after the duel. Three months earlier, Watson had held off Nicklaus to win his first green jacket at the Masters.