The three fights between Muhammad Ali and Joe Frazier were among the most exciting in boxing history.
The first occurred at Madison Square Garden in March, 1971, and it was the most hyped event of the sports year.
Ali, the boxer, had the edge in the early rounds, but Frazier, the slugger, took charge in the late rounds. It was a close fight going into the final rounds, but Frazier registered a 15th-Round knockdown and won the decision. The victory allowed Frazier to retain his heavyweight championship.
Frazier would lose his title to George Foreman, so when Ali and Frazier met in 1974, there was no championship at risk. Ali won a unanimous decision in the fight.
They met again in 1975 in Manila. Ali had knocked out Foreman and he was the defending champion. In this bout, Ali's speed and sharp left jab gave him the edge in the early rounds, but Frazier's explosive left hook and battering-ram style had hurt Ali badly.
Just as it looked as if Ali had nothing left, he turned it around in the late rounds and Frazier's corner stopped the fight after the 14th Round because he no longer could see Ali's punches.
An exhausted Ali could hardly get up off of his stool when he found out he had won the fight and the greatest rivalry in boxing came to an end (via CNNSI.com).