Floyd Mayweather has feasted on every opponent he has faced is his 40-fight pro career.
But my greatest advice would be to stay "Sugar" free.
With all the hype surrounding the possible megafight between Mayweather and Manny Pacquiao, many casual boxing fans are shouting that PacMan will be the one to eat Floyd's "donut".
I believe Sugar Shane Mosley poses the biggest threat to Floyd's perfection.
Manny Pacquiao is going to take a lot of punishment from Floyd's jab and wear down from the ring discipline that Floyd possesses.
Shane Mosley possesses the kind of jab and counterpunching ability that it will take to combat Floyd.
Also, they would more than likely fight at 147, where Shane is next to dominant. Mosley was in over his head fighting two bigger men in Winky Wright and the admirable Vernon Forrest (R.I.P).
Those two account for four-of-the-five losses that Mosley has.
The fifth loss to Miguel Cotto, in my estimation was a draw, and Mosley took off rounds in that fight thinking that he was winning. He in my eyes was the better boxer than Cotto.
Mosley has the kind of power and speed that will stabilize Floyd's defense, but the jab will be the main reason anybody stays in a fight with Floyd.
Mosley has never suffered a knockout out loss, and his resilience has kept him in EVERY fight he has every had. Even when he cut his head against Forrest, that was the first time he ever was cut in a fight professionally. He responded to it very well and willed himself through the 12th round.
He is persistent enough and took the kind of punishment in his losses that Mayweather has yet to taste. He will have nothing to lose, like any fighter that Floyd will face as long as he stays undefeated.
He looked liked the kind of fighter that no one would want to fight against Margarito.
People may say his age will catch up, but tell that to Bernard Hopkins, who is close to 45 years of age, yet still embarrasses the likes of Kelly Pavlik, Antonio Tarver, and Winky Wright.
Shane works directly with Hopkins now and has the same trainers. That will be a key factor.
Styles make fights, and Shane's is perfect for the likes of Mayweather.
Shane defeated Oscar De La Hoya twice in the prime of his career, and I honestly think he may be a more disciplined fighter now then he was then.
De La Hoya was able to stay in the fight with Floyd because of his ability to jab and stay disciplined. I honestly don't believe any fighter without discipline at 147 or lower can beat Floyd.
There are no blueprints made for beating Mayweather so it will be a tall task. But Shane Mosley is big enough, fast enough, and more importantly skilled enough to have the best chance to make the first one.