More impressive KO?

Both brutal KO's. But I'd go with Pac-Hatton, the only thing missing is a casket beneath Hatton and he's ready to go six feet under. Martinez KO was equally impressive but he really caught Williams coming in face first therefore having the effect of the punch meaner.

both are equally devastating KOs

Just on the punch alone and not considering the previous knockdown of Hatton in the 1st. I gotta go with Pac-Hatton KO, that was precise, calculated move and you can actually hear the punch just watching it in your tv. That's why Hatton was never the same again. Martinez was more like an unorthodox punch, and Paul just got unlucky.

Obviously Sergio's, but whats' the point of this thread? Should we compare every KO that ever happened?

Martinez got his move from pac, chexk this out. Check this out. Pac did it to marquez. Pac punch. Link: http://www.youtube.com/watch?v=LVStmLCoH30&feature=related @ 1:37 second mark. Here is Martinez knock out of Williams. http://www.youtube.com/watch?v=i81El880Cwk In MMA they call it the Pacquiao punch, now even Martinez is using it. bro, stop preaching that sh1t man!......

They are both impressive but I will have to go with Sergio. Either one is still good though.

Pac KO Hatton, or Martinez KO Williams? Williams was actually a live opponent and had never been KO'd. So gotta go with Williams ko Williams. hatton - ko'd a couple of fights earlier cotto - ko'd a couple of fights earlier margarito - ko'd a couple of fights earlier williams - never KO'd. EVER.

always knew p dub had a suspect chin. it just needed tob shown. in da first fight. p dub got dropped wit a right which iz not martinez fav shot. coming tonight though, left just came and lights out. diff between pac and martinez iz dat pac fiented dat right and came left strong. had hatton have like multiple concussions dat night.

Martinez's KO was much more impressive. Hatton's KO was already inevitable because of the two earlier knockdowns but Williams getting KTFO was not. And the way that Williams looked after the KO with his eyes open, that shit looked scary.

Martinez - Williams for sure. I jumped out of my seat. The Hatton KO only made me stare at the TV in awe.

Martinez over Williams, reason being, Anyone with a brain cell knew Pacquiao was going to beat Hatton by KO, just not that early i was expecting Pacquiao to KO Hatton in around 8 or 9. Just overall Hatton had no chance vs Pac. On the other hand Martinez vs Williams was a toss up and for anyone to grab, noone expected that at all. atleast on pac vs hatton you knew pac was gunna win, here you didnt know who was gunna win Martinez got his move from pac, chexk this out. Check this out. Pac did it to marquez. Pac punch. Link: http://www.youtube.com/watch?v=LVStmLCoH30&feature=related @ 1:37 second mark. Here is Martinez knock out of Williams. http://www.youtube.com/watch?v=i81El880Cwk In MMA they call it the Pacquiao punch, now even Martinez is using it.