Ten of Muhammad Ali's former rivals pay tribute to the three-time world heavyweight champion.

Ron Lyle A look back at Ron Lyle, a convicted murderer who upon his release from prison, was able to rebuild his life and become one of the top heavyweight contenders in the 1970s. Lyle would fight Muhammad Ali, George Foreman, and Earnie Shavers among others.

Considered one of the hardest-hitting heavyweight boxers of all time, Earnie Shavers took on all the best of his era including Muhammad Ali, Larry Holmes, and Jerry Quarry. This is a look back at his career and how he got into the sport of boxing.

George Foreman vs. Ron Lyle was a boxing match that took place on January 24, 1976 in Caesars Palace, Paradise, Nevada, U.S.