LAS VEGAS (AP) - The fact they're much bigger than when they first met eight years ago is undeniable. Both Manny Pacquiao and Juan Manuel Marquez have added bulk along with the pounds, and both have had to deal with those who suspect they didn't do it naturally.

The fighters aren't the only thing that's grown. So have the purses and the attention as they meet Saturday night for the fourth - and presumably last - time in the rivalry that has served both fighters so well.

Marquez will try once again to do what he hasn't been able to do in 36 evenly contested rounds against Pacquiao - get a decision from the ringside scorecards. Pacquiao, meanwhile, needs a win just as badly amid suggestions that he might be slipping.

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