Host City: St. Louis, United States
Venue(s): Physical Culture Gymnasium, Washington University, St. Louis
Date Started: September 22, 1904
Date Finished: September 22, 1904
Format: Single elimination tournament.
Charles Mayer and Ben Spradley were the only two competitors, with Mayer winning the gold medal by a TKO at 1:40 in round three. Mayer also competed as a heavyweight at the 1904 Olympics, losing a final round match for the gold medal. He was the 1905 AAU Champion. The top American fighter in this class was William Rodenbach, who was AAU Champion from 1900-04, and was heavyweight champion in 1901 and 1904, but he did not enter the Olympic tournament.