1939-06-17 French Championships Men's Tennis: American collegiate champion Don McNeill beats countryman Bobby Riggs 7-5, 6-0, 6-3
1939-07-07 Wimbledon Men's Tennis: Bobby Riggs beats fellow American Elwood Cooke 2-6, 8-6, 3-6, 6-3, 6-2 for Wimbledon sweep, also won doubles & mixed doubles titles
1939-09-17 US National Championship Men's Tennis, Forest Hills, NY: Reigning Wimbledon champion Bobby Riggs beats fellow American Welby van Horn 6-4, 6-2, 6-4
1940-09-09 US National Championship Men's Tennis, Forest Hills, NY: Donald McNeill beats fellow American Bobby Riggs 4-6, 6-8, 6-3, 6-3, 7-5 for his second major singles title
1941-09-07 US National Championship Men's Tennis, Forest Hills, NY: 1939 champion Bobby Riggs beats Frank Kovacs 5-7, 6-1, 6-3, 6-3
1941-11-26 Amateur American tennis stars Bobby Riggs and Frank Kovacs turn professional after being suspended by the US Lawn Tennis Association for undisclosed financial gain