Andre Berto won't be the last of Floyd Mayweather

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Everybody knows it will not be the last fight, everybody knows that he will win and everybody knows that they will still find time to watch Floyd Mayweather's retirement fight at the MGM in Las Vegas on Saturday.

Mayweather is unbeaten in 48 fights, he has held a version of the world title since 1998 and has amassed a personal fortune in excess of $400 million (£260m) by using his fists; he insists that Saturday is the end, the last chance to watch the magic. He is, trust me, kidding.

In the opposite corner for Mayweather's 12th consecutive fight at the MGM will be Andre Berto, who is not the sacrificial lamb that most people claim. Berto is not, let's get this straight, the best available welterweight for Mayweather's supposed last fight, but he could provide the ideal opposition for Mayweather to look exciting. Berto, in short, will "have a go".

Mayweather has not had a legitimate stoppage since beating Ricky Hatton in 2007 and Berto is the type of fighter that could most definitely alter that statistic. Hatton deserves to be free of the dubious accolade.

"You know, on any given Saturday there can be an upset," said Mayweather. "Berto is a former world champion - he knows what will happen to him, he has the chance to be one of the best guys in the sport. I'm not and I have never overlooked an opponent."

The true agenda to Saturday's fight is the ancient record set by Rocky Marciano back in the 1950s. Rock, as we call him, was the heavyweight champion of the world and quit the sport at the tender age of 32, the reigning undisputed heavyweight champion and unbeaten in 49 fights. Mayweather claims that Rock's record is not on his mind and he is fibbing.

There is absolutely no chance that Floyd wins on Saturday, wins well, equals Rock's record and then vanishes to control his make-up, music and shoe industries. Not a chance in sweet boxing heaven!

I hate to say this, but Mayweather's record is a zillion times better than Rock's. It's true, sorry. The Rock walked away from the sport when he was just 32 and 20 days. Floyd is 38. The Rock had seven world title fights in three years. Floyd has been in 25 world title fights in 17 years. The cash difference is irrelevant because the love and respect of all boxing fans is priceless and the Rock had those riches.

Marciano remains an iconic fighter, a man capable of finding a punch - he called his right 'Suzie Q' - that could alter and end a fight. He fought with grotesque cuts, he fought in smoke-filled arenas and his every moment was captured forever in unforgettable black and white photographs. Mayweather will leave us with selfies taken on planes, in jewellery shops and man caves with Justin Bieber. However, Mayweather is a superior fighter.

The Rock, however, had that something that lovers of real sport crave. He won real fights, not just fights that generated $600m (£390m) and he fought with his giant heart out on his massive sleeve. Sure, we love Floyd's skills, but just imagine for one second how much we would love him if he had ever been in the type of slugfest that made Rocky Marciano the idol that he is. Do we really prefer a slip, a block, a shift in stance to a man setting his feet, bleeding like a slaughtered pig, howling through the pain and then, behind on points, throwing a Suzie Q that ends a fight in round 13? I think Floyd will deliver a bit of the Rock this Saturday.