Take the 2007 version of Floyd that domainted Hatton and then take the 2013 version of Floyd that dominated Canelo and put them in the ring together. What happens? Obviously the pretty boy version of Mayweather was a lot faster and more explosive whilst the Money version was a lot more defensively sound and more composed. Personally I think Pretty boy would win by UD because I think the youthfulness of young Floyd would be too much for Money and I think Pretty boy would out work him and throw more punches. Leading to the decision.
