I haven't seen last night's fight, but let me comment in general.
Have you ever seen a fighter, in the heat of a fight that he is winning, complain about a low blow? I think that, generally, it is a guy looking to get out of a fight, and steal a win or, at least, justify a loss, that complains about low blows.
You know what I think is far more troublesome? In a clinch, when he raps on your kidneys.