George Foreman vs. Muhammad Ali, billed as The Rumble in the Jungle, was a heavyweight championship boxing match on October 30, 1974, at the 20th of May Stadium (now the Stade Tata Raphaël) in Kinshasa, Zaire (now Democratic Republic of the Congo), between undefeated and undisputed heavyweight champion George Foreman and Muhammad Ali. The event had an attendance of 60,000 people. Ali won by knockout in the eighth round.
It has been called "arguably the greatest sporting event of the 20th century" and was a major upset, with Ali coming in as a 4-1 underdog against the unbeaten, heavy-hitting Foreman. The fight is famous for Ali's introduction of the rope-a-dope tactic.
Some sources estimate that the fight was watched by as many as one billion television viewers around the world, becoming the world's most-watched live television broadcast at the time. This included a record estimated 50 million viewers watching the fight pay-per-view on closed-circuit theatre TV. The fight grossed an estimated $100 million (inflation-adjusted $500 million) in worldwide revenue. Decades later, the bout would be the subject of the Academy Award winning documentary film When We Were Kings