Floyd has to be favorite for sure , but i dont recall Floyd dominating Castillo , and Ricky is a pressure fighter in this kind of mold.
But even if on paper the odd's are hugely in Mayweathers favour i commend Hatton for wanting to fight the best out there.
Also if Floyd does win then were's the shame in that for Ricky you see in a funny kind of a way Hatton has nothing to loose ..................... and if he could win then WOW