Pacquiao KO11 Barrera Pacquiao KO10 Morales (how is this one not on the list?) Pacquiao KO2 Hatton In that order. Morales is miles ahead of Hatton in a P4P sense, all time wise, and had never been even close to knocked out. I would have put it in front of Barrera, but Morales was going down hill pretty fast.
Pacquiao SD12 Marquez This one. Definitely. Finding one bent judge is pretty impressive. Finding two of them is outstanding work.
The TKO win against Barrera will always be Pac's signature defining fight but impressive would have to be the Hatton KO. There was no expectation in beating up Marco and that took the boxing world by surprise. However, the boxing world was expecting Pacquiao to get by Hatton and not only did that, but he could have killed him. Thus, the demolition of Hatton has to be the most impressive feat having defeated the previously unbeaten jr welterweight king.
Yea barrera and hatton are very good wins for pac but he just looks better beating hatton. He was expected to win but the way he won could be his most impressive win. He knocked him out cold with one punch.
As a former champ, for me it was Pac-Morales II. It is then that imo PAc took a turn for the better skill wise. The right hook was there, the feints, the speed. He beat a past it Morales very impressively imo.
Over De la Hoya. Everyone fought that De la Hoya was fighting the MUCH SMALLER man a was going to destroy Pacquiao. He made that fight to win. Against Hatton, Pacquiao has already beaten DLH and everyone knew he was a threat.