1. Muhammad Ali vs Joe Frazier I (1971)

The cultural significance of this fight was colossal, and more people tuned in to watch it than had done so for the first moon landing two years before.

  1. Mike Tyson vs Lennox Lewis (2002)

Though Tyson was past his best, this titanic clash still remains the highest-grossing heavyweight fight ever after hauling in $112million.

  1. Mike Tyson vs Evander Holyfield II (1997)

Holyfield’s upset win in their first fight generated enormous appeal for this return clash.

  1. Muhammad Ali vs George Foreman (1974)

Ali produced his most inspired performance to knock out the seemingly invincible champion.

  1. Muhammad Ali vs Joe Frazier III (1975)

The heavyweight rivals warred in the final fight of their historic trilogy.

  1. Mike Tyson vs Evander Holyfield I (1996)

The world’s top two heavies, both of whom were worldwide stars, met in a highly anticipated clash.

  1. Joe Louis vs Max Schmeling II (1938)

This fight became emblematic of the struggles between Nazi Germany and the countries which opposed it in the run up to World War II.

  1. Gene Tunney vs Jack Dempsey II (1927)

With its infamous ‘Long Count’, this rematch saw just under 105,000 spectators cram into Soldier Field in Chicago.

  1. Jack Johnson vs James Jeffries (1910)

Another heavyweight fight which mirrored cultural divides, Johnson – the first black man to become world heavyweight champion – knocked out the former world ruler.

  1. Joe Louis vs Billy Conn II (1941)

History’s first televised world heavyweight championship fight saw Louis defeat former light-heavy boss Conn.