The 1980 Open Championship was a men's major golf championship and the 109th Open Championship, held from 17 to 20 July at Muirfield Golf Links in Gullane, Scotland. Tom Watson won his third Open Championship, four strokes ahead of runner-up Lee Trevino. It was the fourth of Watson's eight major titles; he won two additional Opens in 1982 and 1983. It was Watson's first win in a major in three years. The Open 1980: July 17–20, 1980 at Muirfield. Champion: Tom Watson, at 271 (−13) — 4th major title. Wiki link