"He looked like he'd been shot in the balls"

[CFH]

So Joe is admitting he intentionally low blowed Hopkins just because he was embarassed he got put on the floor in the 1st round? That is somewhat cowardly in my eyes. Pretty sad when a guy gets legit knocked down and then says he retaliated unfairly just to get his dig in Then again, Hopkins is no angel of goodness.

I want a rematch

While I agree it is a bit cowardly, I think it's more an example of fighting fire with fire than anything else. Calzaghe knew Hopkins was going to be as dirty as he could, and he probably just wanted to show B-Hop that he could bully him back.