Is Manny Pacquiao starting to slow down?

[Roxas]

before everyone starts bitching about Mayweather and Pac Mayweather and Mosley need to do their thing first....

[Akinapepemo]

Off the net obviously, I don't believe it myself,
I just thought it make some good points though,
Manny was breathing heavily in between rounds and there was no head movement or defense whatsoever

How can there be defense when Clottey almost wasn't punching?