The 1870 Open Championship was a golf competition held at Prestwick Golf Club, Ayrshire, Scotland. It was the 11th Open Championship and the last to be contested for the Challenge Belt. Tom Morris, Jr. won the championship by 12 shots from Bob Kirk and Davie Strath. By winning for a third successive time Tom Morris, Jr. gained permanent possession of the Challenge Belt.The contest took place the day after the autumn meeting of the club. "On Thurs the 15th Sept.