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The competition consisted of a single-elimination tournament. Bronze medals were awarded to both semi-final losers. Bouts were three rounds of three minutes each.
1904: 145–158 lb (65.8–71.7 kg) · 1908: 140–158 lb (63.5–71.7 kg) · 1920–1936: 147–160 lb (66.7–72.6 kg) · 1948: 67–73 kg · 1952–2000: 71–75 kg · 2004–2012: 69–75 kg · 2016–2020: 70–75 kg · 2024–: 72–80 kg