Medals: 1 Bronze (1 Total)
William Nelson won two AAU titles in 1899 and 1900, with the second one coming over future Olympic champion, George Mehnert, in the finals. Four years later, Nelson was defeated at the Olympics by Mehnert's clubmate, Gustav Bauer, in the first round. It was an exceptionally close match that required three overtimes before Bauer was declared the winner. Since there were only three wrestlers in the class, Nelson won a bronze medal.
|1904 Summer||St. Louis||Wrestling||Men's Flyweight, Freestyle||United States||USA||3||Bronze|
|1904 Summer||St. Louis||Wrestling||United States||USA||Round One||Match #1||2||Bauer (USA) decision (3 overtimes), Nelson (USA)|