Armand Simon played singles and doubles for Switzerland at the 1920 Olympics. His only known tournament win came in 1905 at Bad Ragaz in Switzerland. He reached the semi-finals at St. Moritz in 1908, but his best result was likely a quarter-final appearance at the 1919 World Covered Court Championships. Simon also reached the quarter-finals at Bad Ragaz in 1907, in the 1913 Lausanne Autumn Meeting, and at the 1913 French-Swiss Championship, held in Montreux. He played Wimbledon in 1913, losing in the first round, and also played at the World Hard Court Championships in 1913-14, making round three in 1914.
|1920 Summer||Antwerpen||Tennis||Men's Singles||Switzerland||SUI||9T|
|1920 Summer||Antwerpen||Tennis||Men's Doubles||Switzerland||SUI||9T|
|1920 Summer||Antwerpen||Tennis||Switzerland||SUI||Round Three||Match #1||2||MalmstrÃ¶m (SWE) 3, Simon (SUI) 0||0|
|1920 Summer||Antwerpen||Tennis||Switzerland||SUI||Round Two||Match #1||1||Simon (SUI) 3, de SatrÃºstegui (ESP) 2||3|
|1920 Summer||Antwerpen||Tennis||Switzerland||SUI||Hans Syz||Round Two||Match #8||2||ITA 3, SUI 1||1|