"Pacquiao hasn't had a KO in ten years!" First off, that's not true. He knocked out Lucas Matthysse. Secondly, it's not his fault that refs require him to kill someone to get a KO! I think we can all agree that no one would argue if the ref had stopped the Margarito (especially this one), Rios, Algieri, and Horn fights. Pacquiao took his foot off the gas against Rios (Pac offered Rios a sheepish grin and glove tap after a peach of a left hand) and Margarito. He was finishing Algieri in the 9th and then the ref literally pushed Pac off. Pac's back was turned as he thought the ref had waved off the fight. Horn also easily could have been a TKO victory. That makes 4 KOs that could have all been warranted. I think the visual of a smaller man beating up much larger men just isn't as urgent.