Sugar Ramos, the Cuban featherweight champion whose fists led to two ring deaths — one inspiring a Bob Dylan song — has died in Mexico City aged 75.

Key points: Champion Davey Moore died after a fight with Sugar Ramos, sparking outcry and inspiring a Bob Dylan song

Champion Davey Moore died after a fight with Sugar Ramos, sparking outcry and inspiring a Bob Dylan song Ramos was inducted into the International Boxing Hall of Fame in 2001

Ramos was inducted into the International Boxing Hall of Fame in 2001 He died from cancer complications

He died on Sunday from cancer complications, the World Boxing Council (WBC) said.

Ramos was best known for his 1963 fight at Dodger Stadium in Los Angeles with Davey Moore in which he won the featherweight title for the first time.

It was the only fight card held at the ballpark, and it was deadly.

Ramos had been battered by the champion in early rounds but came back to stop him in the 10th. Moore left the ring on his own but lost consciousness in his dressing room and slipped into a coma.

He died two days later, sparking an outcry about the safety of boxing and prompting then California governor Edmund Brown to call for the sport to be banned.

Dylan would later memorialise the bout in the song Who Killed Davey Moore?

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Ramos was no stranger to tragedy in the ring. Five years earlier in Cuba he stopped a fighter named Jose Blanco, who also died.

Ramos, whose real name was Ultiminio Ramos, lived in Mexico after fleeing Cuba. He was the first champion of the WBC, winning the organisation's new belt in his fight with Moore.

"We will always remember Ultiminio as a great champion, but even more so, as a wonderful, friendly, genuine and kind man," WBC president Mauricio Sulaiman said.

Ramos, who started boxing professionally at age 15, retired in 1972 with a record of 55-7-4 with 40 knockouts.

A power puncher despite standing only 165 centimetres tall, Ramos drew large crowds to his fights, largely because he never backed up.

He fought in an era of 15-round battles and six-ounce gloves, and he fought whoever was put in front of him.

Who did kill Davey Moore?

Davey Moore, left, trades punches with Sugar Ramos in the fight that killed him in 1963. ( AP: File photo )

Doctors who looked at tapes of the Moore fight didn't blame Ramos's punches for the boxer's death, though.

The ring at Dodger Stadium had only three ropes and they weren't padded. Moore's head snapped on the bottom one as he fell in the 10th round and his brain swelled.

"It was a time when there was one champion in every division, if you can imagine that," said boxing publicist Bill Caplan, who was at the fight.

"Davey Moore was the guy and he was a heck of a fighter. It turned out that so was Sugar Ramos."

Caplan also saw Ramos fight Mando Ramos at the iconic Olympic Auditorium, where he drew capacity crowds.

Sugar Ramos lost the fight by split decision, and was never the same fighter again.

"One of the greatest fights I've ever seen, just a bloody war," Caplan said.

"He was a very, very popular, high-action fighter."

Ramos would defend the title that he won from Moore three times before losing it by knockout to Carlos Ortiz in 1966.

He was knocked out in a rematch a year later, and never fought for a title again.

But it was his fight with Moore for which Ramos would mostly be remembered. Ramos shrugged off suggestions he killed Moore in the ring, saying his injury was caused by the rope and complaining no one gave him credit for putting up a good fight against a top champion.

Soon after the fight, another rope was added to boxing rings, and they were padded.

Dylan, in his 1963 song, asked the question: Who was to blame for Moore's death? He sings at the outset:

Who killed Davey Moore Why an' what's the reason for? 'Not I,' says the referee 'Don't point your finger at me.'

The lyrics continue:

'Not us,' says the angry crowd, Whose screams filled the arena loud. 'It's too bad he died that night 'But we just like to see a fight.'

AP