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.
The early dementia condition known as punch drunk syndrome, previously only thought to afflict boxers, has been linked to high impact sports
Saturday's bout and its billing as the richest fight in history will see Floyd Mayweather attempt to unify his WBA light middleweight title against WBC 154-pound champion Saul 'Canelo' Alvarez at the MGM Grand Garden Arena in Las Vegas.
Pound for pound number one at 36, Mayweather is back in the ring for the second time in five months.
Canelo turned pro at 15 and wins with a hard-hitting style and a powerful body attack.
Alvarez signed with Golden Boy Promotions in 2010, and his impressive unbeaten record of 42, no losses and one draw rivals that of Mayweather on 44 wins, no losses and 26 Knock Outs.
Former heavyweight boxer Tommy Morrison died at the age of 44 on Sunday night, his manager told the Associated Press.
He was perhaps most famous for his role as Tommy Gunn in the film Rocky V but also enjoyed sporting success, beating George Foreman to win the WBO heavyweight title in 1993.
Morrison's family has not disclosed the cause of his death.
David Haye has announced he will fight Tyson Fury on September 28.
Haye tweeted: "I've just signed to fight Fury on Sep 28, lets hope he finally agrees (and signs today) and he doesn't keep delaying."
Vladimir Klitschko stopped former sparring partner Francesco Pianeta inside six rounds in Mannheim on Saturday to retain his four world heavyweight title belts.
The Italian-born challenger briefly ruffled the champion by landing a couple of punches in the second round but apart from that appeared out of his depth.
Klitschko twice sent his opponent to the canvas in the fourth round before the referee called a halt to proceedings eight seconds from the end of the sixth as Pianeta took a pounding.
The 37-year-old Ukrainian extended his unbeaten run to 18 fights.
British boxer Audley Harrison has announced his retirement from the sport following his fourth career defeat at the weekend.
The former Olympic super-heavyweight champion was knocked down and counted out within 70 seconds against Deontay Wilder in Sheffield on Saturday night.
Harrison today confirmed on his personal website it will be his last action in the ring in a statement titled "I'm retiring".
"There are only so many times you can fall before it becomes foolhardy to continue," he wrote. "I’ve fallen a lot, but winning the heavyweight title was a destination I really wanted to get to. Coming back from adversity has been synonymous with my life."
Harrison added: "I’ve done well to turn my life around, but sadly my dream to be a legitimate world champion will be unrealised."
British boxer Amir Khan has kept his hopes of punching his way to another world title fight alive on a night which saw Olympian Anthony Ogogo began his pro career with a win.
Headline-act Khan was knocked to the canvas in the fourth round in Sheffield but stayed strong against Mexico's Julio Diaz to claim a hard-fought points victory at the Motorpoint Arena.
Earlier Ogogo, a bronze medallist at London 2012, defeated veteran Kieron Gray with a knockout in the second round on his professional debut.