Boxing Records: 10 Unbreakable Achievements in Ring History

By Marcus 'Iron' Thompson

April 9, 2025 at 04:36 PM

Most dominant boxers reigned over multiple weight classes, but the most impressive world title record belongs to Manny Pacquiao as boxing's only eight-division champion. Starting at 112 pounds, he conquered divisions up to 150 pounds - gaining over a third of his body weight.

Wilfred Benitez holds the record as youngest world champion, winning the light-welterweight title in 1976 at just 17 years old while still in high school. On the opposite end, Bernard Hopkins became the oldest champion at 49, breaking his own record multiple times.

Henry Armstrong achieved a feat that's impossible today - simultaneously holding undisputed titles in three weight classes (featherweight, lightweight, welterweight) in 1938 when only one champion existed per division.

Boxer in ring

Boxer in ring

The most career knockouts belongs to Billy Bird with 139 KOs across 356 fights from 1920-1948. Len Wickwar holds the record for most total fights with 473 bouts (340-87-43) between 1928-1947.

Other unbreakable records include:

  • Longest unbeaten streak: Jimmy Wilde (103 fights)
  • Most rounds in one fight: 276 (Jones vs Tunney, 1825)
  • Longest fight: 110 rounds, 7h19m (Bowen vs Burke, 1893)
  • Most fights between same opponents: 63 (Sweeney vs Cripps)
  • Most fights in one year: 75 (Jack Marks, 1911)
  • Best single-year streak: 45-0 (Harry Greb, 1919)

Pete Rademacher remains the only fighter to challenge for a heavyweight title in his pro debut, while George Foreman became the oldest heavyweight champion at 45 in 1994.

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