If Floyd trained in MMA from an early age instead of boxing, how would he have done? I think he would have been one of the best fighters ever. Floyd was one of the most skilled boxers of all time, and the talent pool for MMA is MUCH smaller than the talent pool for boxing, especially at the time Floyd would have been starting his career.
It depends on the scenario. Are we dumping him somewhere on UFC 7 or 8 around the same time his professional boxing career began? That was back before they felt the need to implement weight classes, so we'd be matching up Floyd with 6'3 heavyweights. You can afford to give up height and weight when you're as naturally gifted as Mayweather, but this would be a bit of a stretch. In the open weight tournament format, Floyd would horrifically chin a couple of plumbers, taxi drivers, and bullshido practitioners before someone like Dan Severn takes him down and makes sweet love to him in the finals. With having to focus on multiple disciplines instead of just the one, he wouldn't be anywhere near the defensive genius he was as a pure boxer. He would be used up and spit out within 4-5 years.
Who the **** knows. How well does he handle the wrestling component etc? theres just no way to know short of actually seeing it.
Some boxers are not built for anything else other than boxing and Floyd Mayweather strikes me as that guy, James Toney is another. While not as talented as those two it's the opposite for a guy like Francois Botha who put on some decent showings in K1. Some people are built for it while others ain't.
Why would Floyd be as good at kicking as kick boxers in the MMA world just because he was a skilled boxer? Why would he be well rounded and be as good at BJJ as Khabib just because he could box? All these UFC fighters come from a specific martial arts background before moving to MMA fighting, it depends on what Floyd trained uin before he would join the UFC? Why would Floyd develop better ground skills tan other UFC fighters just because he learned to to slip and counter with punches well? Would he have been great at golf to? Plus Floyd`s boxing skills would be weaker because he wouldn`t have had Roger or Floyd sr to train him in boxing technique etc.
Impossible to say really. Floyd was good at what he did but MMA is a whole other ballgame. The breadth of skills that you have to learn is so much greater than in boxing.
