FBI files suggest the 1964 world title bout between Cassius Clay and Sonny Liston was not a fair fight and the Mafia may have been involved.
It's being billed as richest fight in history - it features the most highly paid sportsman in the world for the last three years
Mike Tyson has revealed that he is on the verge of dying from alcohol and drug abuse after years of lying about being sober.
British boxer Amir Khan has tweeted his support for former world heavyweight champion David Haye after the 33-year-old underwent re-constructive surgery on his shoulder.
Haye has been told to "seriously consider" ending his 11-year boxing career after the surgery.
@mrdavidhaye retires from boxing after having a shoulder operation and being told not to fight again. All the best bro. Always a champ.
David Haye has tweeted a picture of his injured shoulder which could force him into retirement.
Haye, 33, underwent surgery on Thursday to reconstruct his right shoulder which forced him to pull out of a scheduled fight with Tyson Fury, who reacted furiously to the news on Twitter.
The former world heavyweight champion said the operation was a "crushing blow" to his plans.
Former world champion David Haye underwent surgery on Thursday to reconstruct his right shoulder and has been told to "seriously consider ending his boxing career", Hayemaker Boxing said.
The Londoner has pulled out of his rescheduled February 8 fight with domestic rival Tyson Fury and looks set to end his career permanently after an unsuccessful operation last week.
"It's a crushing blow for me," he said. "I had big plans for next year and the ultimate goal was to win back the world heavyweight title, something my amazing fans deserve.
"What I didn't anticipate was that this year would be the unluckiest of my career and that a number of injuries would disrupt my plans so much.
"Perhaps it just wasn't meant to be. The boxing gods keep hinting that maybe enough is enough and that it's time to finally hang up my gloves."
A Ukrainian boxer Vitali Klitschko known as "Dr. Ironfist" has announced he plans to run for the country's presidency in 2015, the state-run Ukrinform News Agency reported.
Klitschko, 42, said from the Ukrainian parliament rostrum in the capital city of Kiev: "I want to say that I cannot be intimidated or stopped.
"In order to put an end to various attempts to get rid of me as a possible candidate, I want to say that I'm running for president."
With a professional boxing record of 47 wins (41 KOs) and two losses, the 6-foot, 7½-inch heavyweight is the leader of the Ukrainian Democratic Alliance for Reform party.
Boxing legend Frank Bruno has condemned the supermarket sales of fancy dress costumes that presented mental health patients as bloodthirsty maniacs.
"I don't know how they went to the board meeting and put that all out," he said during an appearance on ITV's Daybreak.
Asked about his own mental health, Bruno said he was in a "very good place" after his own well-publicised battles with extreme bi-polar disorder.
Justin Bieber was among a cast of A-list celebrities attending Floyd Mayweather's world title fight against Saul Alvarez in Las Vegas, and the pop star joined the American boxing champion after his win.
Former undisputed heavyweight world champion Lennox Lewis and one-time WBA welterweight champion Ricky Hatton have slammed a judge's decision in the Floyd Mayweather fight against Saul Alvarez, after he called the bout as a draw.
OMG. That judge should never judge again.
Even 116-112 was an insult
The two other judges had Mayweather winning the fight.
American Floyd Mayweather has won on points against Mexico's Saul Alvarez, in what could be the highest grossing fight of all time. Mayweather won by 114-114, 116-112, 117-111.
Manchester United's Rio Ferdinand has called the Floyd Mayweather fight against Saul Alvarez a "whitewash", as he wins by a landslide.
The kid went to school today....a whitewash....every round won. @floydmayweather
Alvarez took that defeat well, very composed in the aftermath. Defeat is not an easy thing to deal with. Emotional roller coaster
Justin Bieber is among a host of celebrities including Hollywood A-lister Jack Nicholson attending the Floyd Mayweather fight against Mexico's Saul Alvarez, which could be the biggest grossing bout yet.