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 and was one of the most watched televised events at the time. Ali won by knockout in the eighth round.
Unfortunately the movie The Rumble in the Jungle: George Foreman vs. Muhammad Ali is not yet available on HBO Max.