Watch Billy Crystal's touching performance telling the life story of Muhammad Ali

Muhammad Ali has died at 74.

In 1979, entertainer Billy Crystal performed a stage act that told, through theatrical impersonations and quotes from the former heavyweight champion, Ali’s life story, from his spectacular start in boxing through his refusal of military service and his later return to the ring and the legendary fights that followed.

Ali was in the crowd to watch it and you can follow his reactions in the inset. Crystal posted it on Twitter earlier when it emerged that Ali was in a grave condition with respiratory problems. You can watch it below.

Billy Crystal's Muhammad Ali tribute – 15 Rounds (1979) from Face Productions on Vimeo.

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