There was a time when the heavyweights truly ruled the world and boxing’s kings carried as much star power as Hollywood’s biggest celebs.

Olympic and Undisputed World Heavyweight champion Joe Frazier, who lost his battle with liver cancer yesterday at the age of 67, was one of the last of that era. So as he is mourned throughout the world, it’s for more than the man —  the hard-knuckled son of a South Carolina sharecropper, who fought his way to fame.

Yes, his battles with Muhammad Ali – the Fight of the Century, the Thrilla in Manila – will long be remembered. But as we say goodbye to Smokin’ Joe, those of us who were witness to it, are also bidding adieu to boxing’s glory years.

“The world has lost a great champion,” Ali remarked upon hearing of Frazier’s passing. “I will always remember Joe with respect and admiration.”

Here's a look back at some of his greatest moments in the ring...

1968 – Frazier vs Buster Mathis

1970 – Frazier vs Jimmy Ellis

1971 Fight of the Century - Frazier vs Ali

1975 Thrilla in Manila – Frazier vs Ali