I agree that Mayweather Jr's performance was great.
Now Floyd Mayweather Jr has his sights on Pacquiao.
But Pacman doesn't agree to be randomly tested for performance-enhancing drugs before the fight.
He had been using various reasons/pretexts like fearing of needles, loss of strength by blood withdrawal, etc. (but remember that both boxers are to be tested, not himself alone). Is he hiding something here?
Remember that Mayweather Jr himself agrees to be tested randomly.