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 in Kinshasa, Zaire, between undefeated and undisputed heavyweight champion George Foreman and Muhammad Ali. The event had an attendance of 60,000 people and was one of the most watched televised events at the time. 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.