Sept. 6 1920 — Jack Dempsey knocks out Billy Miske in the third round to retain the world heavyweight title. 1920 — Bill Tilden wins his first of seven U.S. Open men’s singles titles, defeating Bill Johnston, 6-1, 1-6, 7-5, 5-7, 6-3, at the West Side Tennis Club in Forest Hills, N.Y. 1941 — Bobby Riggs beats Frank Kovacs in …
