Three-time world heavyweight champion Muhammad Ali has died at the age of 74 ©Getty Images

"Photo_Gallery"

Ali shot to fame by winning the light heavyweight gold medal at the 1960 Olympic Games in Rome ©Getty Images

He turned professional immediately after the Olympics and won his first world heavyweight title less than four years later, defeating the previously unbeaten American Sonny Liston ©Getty Images

Liston quit on his stool after six rounds ©Getty Images

Ali suffered his first professional defeat in 1971, losing against fellow American Joe Frazier in the Fight of the Century in New York ©Getty Images

He went on to regain his title with an eighth-round knockout of American George Foreman in the Rumble in the Jungle in Kinshasa, Zaire in October 1974 ©Getty Images

Ali lost on points against American Leon Spinks in February 1978, but avenged his defeat seven months later to regain the world title ©Getty Images

Despite being diagnosed with Parkinson's syndrome in 1984, Ali continued to make public appearances and lit the cauldron at the 1996 Olympic Games in Atlanta ©Getty Images

He also helped carry the Olympic flag at the London 2012 Opening Ceremony ©Getty Images

Ali will be remembered as one of the greatest sportsmen of all time ©Getty Images