Mayweather is the greatest boxer in history!!

[Syf]

Floyds never been Ko'd ever.

Professional, amateurs or sparring, so yeah Id say hes the greatest.

how do you know he hasn't been ko'ed in sparring?

Do you have any idea how much this dude has probably sparred? And also, sparring is used to get back in fighting form. So a KO is more probable in sparring.

in my case, I was ko'ed by a cruiserweight by a body shot about a month ago in sparring (im super middle weight), but its not like it was recorded...

Just from sparring sessions caught on tape, remember that Paul Spadafora was giving an out of shape mayweather all he can handle

[Joeyzagz]

It's well known that Mayweather "Retired" just to save his undefeated record. He has avoided tough fighters. That's the reason why he's undefeated. Is this really hard for you to understand? And all of you think I'm not too keen. Huh!

Floyd may have a perfect record, but at the end of the day he is human just like everybody else. Mayweather retired mainly to heal his hands that he has had problems with. It was a much needed rest, but now he is back to fight the toughest guy in the sport in your beloved Manny Pacquiao.

The reason he is undefeated is because he beat every man he ever faced. Period. I will shortly address the fools you think he avoided:

Cotto: He wanted to fight Cotto early back when they were both 140 and under Top Rank but Bob Arum didnt want him ruining his prized perfect Puerto Rican so it didnt happen.

Mosley: He tried fighting Mosley 3 different times. Once in the 90's when they were both undefeated, again in 2002 and a final time in 2006. Mosley was chasing Oscar on two of the occasions and had a gum injury on the other.

Margarito: Margarito did not become a big star until late 2006 early 2007. By that time Oscar De La Hoya was a bigger name, a bigger guy at 154 with a belt, and Floyd would look to gain 25 million fighting Oscar.

Mayweather may still eventually fight Mosley but the other two guys are damaged goods at this point. I guess next haters will be clamouring for him to fight Paul Williams. But Paul Williams must first build his name as a ppv star just like Mayweather has done. He must pay his dues and climb the ladder, just as Mayweather did early in his career against Chavez, Corrales and Castillo.