1. Muhammad Ali vs Joe Frazier

Producing one of the best fights of all time, this heated rivalry between two all-time greats will forever be the benchmark.

  1. Arturo Gatti vs Micky Ward

Not really a rivalry as these two became the best of friends, but their three meetings were 30 of the best rounds of action in history.

  1. Marco Antonio Barrera vs Erik Morales

Another trilogy, though this one was fought over three different weights, and cemented the status of these two Mexican warriors.

  1. Sugar Ray Leonard vs Roberto Duran

Two of the Four Kings fought each other three times over the course of nine years, though it was their first two back-to-back contests in 1980 which made this rivalry special.

  1. Riddick Bowe vs Evander Holyfield

Fights one and three of this vicious trilogy were sickeningly brutal, while the second included the infamous ‘Fan Man’ incident.

  1. Chris Eubank vs Nigel Benn

There was genuine disdain between these two do-or-die fan favourites. Their first fight was brutal, while their second clash ended in a draw.

  1. Tony Zale vs Rocky Graziano

From 1946-1948, these two fought three times, all ending early and all serving as timeless classics.

  1. Sugar Ray Leonard vs Thomas Hearns

Their first fight was one of the most anticipated in history, Leonard producing a 14th-round stoppage, before they fought to a draw eight years later.

  1. Manny Pacquiao vs Juan Manuel Marquez

Blood, guts and one of the most brutal one-punch knockouts ever; this four-fight rivalry had it all.

  1. Carl Froch vs George Groves

A historic (whisper it) 80,000 flocked to Wembley Stadium to see how this bitter rivalry would conclude.