Former US heavyweight boxing champion Ken Norton, who beat Mohammed Ali, has passed on at the age of 70, his son says.
Norton died at a care facility in Las Vegas, Nevada, following a series of strokes.
Norton won Ali in their first bout in San Diego in 1973, breaking his jaw.
In their last meeting on September 1976 at the New York Yankee Stadium, Ali won a narrow and controversial decision to retain the heavyweight title.
Some of boxing finest have laid tribute to their departed colleague.
“They called us all handsome. Mohhammed they called pretty. But the fairest of them all Ken Norton,” George Forman wrote on his official Twitter (@GeorgeForeman) account.
“My heart has been heavy since hearing the news earlier today,” Larry Holmes (@LarryHolmes75), whom Norton lost a classic 15-round fight to in 1978, wrote. “He was a good man.
“My deepest condolences to Ken’s family. He was such a great man and fighter and will be incredibly missed in the boxing world and by many.”
Norton began boxing during his time in the US Marines, and turned professional shorty after he left the military in 1967.
He won a heavyweight title in 1977. After his career ended, Norton appeared in several movies and became a fight commentator.
He had five children, one of whom went on to play professional football and now coaches in the National Football League for Seattle Seahawks.