Muhammad Ali once named the heavyweight he feels would have caused him the most problems inside a boxing ring.

Muhammad Ali redefined heavyweight boxing—he broke every rule about how big men should fight. Across 21 years as a professional, Ali won 56 fights (37 by knockout) and lost only 5. Ali turned fights ...

Cleveland Cavaliers star LeBron James has called Muhammad Ali the greatest athlete of all time. But on Friday afternoon, hours before Ali died at age 74, James said it was Ali's work and influence ...

Artist Antonio Alcala gets the stamp of approval for his new USPS postage stamp.