Who was the first American golfer to break 60 on 18 holes in a major tournament? August 17, 2017 By Show answer Sam Snead, who shot a 59 (31 out, 28 in), 11 strokes under par, in the 1959 Greenbrier Open at White Sulfur Springs, West Virginia. The competition has since been renamed the Sam Snead Festival Golf Tournament More Golf QuestionsMore Sports Questions