May 1965 Muhammad Ali knocks out Sonny Liston for the world heavyweight boxing championship title in Maine. Ali took one minute and 44 seconds to demolish his fellow American's bid to recapture his world heavyweight title.
October 1973 Ali acknowledges spectators after completing a five-round exhibition bout against Tony Doyle at the National Stadium in Singapore.
September 1978 Ali drops an overhand right on Leon Spinks during their second match at the Louisiana Superdome in New Orleans. The fight went badly for Spinks. Ali rarely lost control, winning back his title by a unanimous 15-round decision, becoming the first three-time heavyweight champion.
December 1978A relaxed Ali cuddles his daughters Laila and Hana.
December 1999 The boxing legend accepts his Athlete of the Century award at the Sports Illustrated 20th-Century Sports Awards in New York.
November 2005 US President George W. Bush confers the Presidential Medal of Freedom on Ali as the champ's wife Lonnie watches, during a ceremony at the White House in Washington.
December 2005 Ali looks on after his daughter Laila defeated Asa Sandell of Sweden for the World Championship super-middleweight title.
April 2016 "The Greatest" with singer Carrie Underwood at the Celebrity Fight Night in Phoenix, Arizona. It was Ali's last public appearance before he died on June 3.