Why DOES Paul Williams want to fight somoene he already beat?

Maybe because the person he wants to fight HAS THE TITLE.

Because Margarito has come off a win against a guy most people consider to be the number 1 at Welter and is now ranked number one and in the P4P list. Williams wants that recognition and a pay check.

Well maybe due to the fact that he wants the respect and money that comes along with being universally known as the MAN at welterweight.

Paul Williams And Antonio Margarito Why does anyone fighter fight those they have beaten before. I mean it is not extraordinary for a fighter to want to fight an opponent he has already beaten, or one that has beaten him. In addition to the above, Margarito, now that he has vanquished Cotto, is the biggest challenge to Williams in that division. Beating Margarito again, twice, would propell Williams into consideration for the best PFP fighter in the world.

Margarito has become the top WW wit the Cotto win, and Williams knows and has already proven he can take him. Only natural he wants anotha crack at Marg. It'd also be to crown an undisputed champ at 147.

Paul Williams can KO Super Middleweights.

^^^EXACTLY. I DON'T UNDERSTAND WHY PEOPLE SAY TONY IS EASILY THE BEST WW. I still think its paul number 1

Because, as wrong as it is, a majority of people rank Margarito ahead of him at welterweight. Williams wants to make it clear he's better by beating him again, probably easier than before.