My 2 Cents for what it is worth..

Cotto v Mosely--I pick Cotto by SD

Cotto v Mayweather- I go with Floyd by UD, he stays away from Cotto to get banged up

Mayweather v Mosely- If they fought tommorow I pick Shane

Cotto v Pac- Pac unless he gets caught early

Pac v Mayweather- Pac Floyd has yet to meet a man at that pace

Pac v Mosely- Mosley