Back then, Ali was still known as Cassius Clay, and at 22, he fought Sonny Liston ... against Liston, Ali announced himself as the greatest during his in-ring interview. I shook up the world!

The upcoming Amazon Prime Video series "The Greatest," which tells the story of the life of Muhammad Ali, has added Amin Joseph to its cast. Joseph will play Sonny Liston in the drama in a series ...