I don't blame Mayweather for demanding the drug testing. How many weights has Manny fought at? 8 or 9 and the guy still keeps his power like a wrecking machine...
Sure, as you get a bit older you move up a couple of divisions but moving up that many, and still keep destroying, come on!!
Why should Mayweather handicap himself by fighting a fighter who "possibly" could be using performance enhancing drugs. If he's clean, fair enough. Roach's fighter has used them before so fair play to Floyd for the demands.

I personally hope that this fight does happen. As someone already said, it would be fight of the century