The ref couldve let it go a little longer, sure and Manfredo didnt look that hurt but he wasnt throwing anything back at all. Even if he was throwing the odd jab it wouldnt have been stopped. I can see why the ref stopped it because you never know whats going on if a guy isnt punching back but really all he needed to do was warn Manfredo. Just tell him to fight back and guve it a few seconds at least, if he still wasnt throwing anything after a warning then people wouldnt be so upset by the stoppage.