Juan Manuel Marquez believes he beat Manny Pacquiao -- twice

LAS VEGAS -- Manny Pacquiao acts as though it's personal, then claims it's not. Just another night in the ring, another notch on his belt and another $25 million or so to take back to the Philippines with him.

It's not that easy for Juan Manuel Marquez. He remains convinced he won both of his previous fights with Pacquiao, and he entered the ring last night as eager for redemption as he is to claim the biggest payday of his long boxing career.

"I hope the judges score what they see, not like the other two fights when they were not impartial," Marquez said.

Marquez was bulked up for the 144-pound fight so he could bring more power into the ring and Pacquiao -- who knocked Marquez down four times in their two fights -- is a far more potent puncher than the last time they met three years ago.

Add in the fact that these two fighters throw punches almost nonstop, and there was potential for an early ending.

"I'm not thinking about the knockout," Pacquiao said. "If the knockout comes, that's just the bonus for your sacrifices in training."

Pacquiao returned to the ring for the first time since he beat Shane Mosley in May, fighting a familiar foe in a bout that earned him yet another big payday. He and Marquez have already gone 24 rounds with each other, rounds so close that ringside judges had trouble figuring out which fighter won.

But the first fight seven years ago was at 125 pounds. The second four years later was at 130 pounds.

This one was for a piece of the welterweight title, though it was at a catch weight of 144 pounds. It's a weight Pacquiao has proved comfortable with over the last few years, but Marquez had no success the only time he got past 140 pounds in a lopsided loss to Floyd Mayweather Jr.

That's the big reason Pacquiao was a 7-1 favorite in a pay-per-view fight that doesn't figure to lack for action.

"At 144 pounds, it's going to be different," Pacquiao had said. "I've improved my boxing and my power. Everything is going to be different."

Pacquiao weighed in at 143 pounds Friday, Marquez at 142 -- the same weight he fought at against Mayweather.

Pacquiao -- who last lost in 2005 at 130 pounds -- risked a 14-fight winning streak against Marquez, a Mexican who has held titles in three different weight classes. Once again he will carry the weight of the Philippines into the ring, and once again he will be fighting someone other than Mayweather.

That's hardly Pacquiao's fault, though. So he has to make do with other contenders, and Marquez has better credentials than any of Pacquiao's opponents since he made a name for himself by sending Oscar De La Hoya into retirement in 2008.

In their first two fights, Marquez used his superb counterpunching skills to keep Pacquiao off balance. Though he went down -- three times in the first round of the first fight -- Marquez was more than competitive in two fights that could have gone either way.

That the first fight was scored a draw and the second a split decision for Pacquiao still gnaws at Marquez, who wore a T-shirt proclaiming he was robbed in both fights when the two boxers were in the Philippines promoting the bout.