Be warned, I am a boxing noob. Like, really a noob. And while trying to educate myself I decided to watch Pacquiao vs Marquez 1. And Pacquiao drops Marquez 3 times in the first. I thought after 3 knockdowns the ref would call the fight a TKO or is it up to the ref to call a TKO based on how a fighter reacts after the third knockdown?