In March 1975, Chuck Wepner met with undisputed world heavyweight champion Muhammad Ali. Suddenly, all the fight was fairly Ali extremely difficult. Vepner had a desperate resistance, and when in the 9th round he sent Ali to the canvas, thought that perhaps a miracle. Vepner kept to the last, and the bleeding continued to stand on his feet, holding strikes champion. In the 15th round, Ali started to score Vepnera.On up and 20 seconds before the end of the last round and the fight was stopped. Chuck Wepner - one of the four who was able to send Muhammad Ali knocked down in the history of his career. It was this battle, namely boxer Chuck impressed Sylvester Stallone, and the script was born to the legendary film Rocky.