Having lost three of his last five fights prior to Saturday night's bout against Juan Manuel Marquez, Juan "Baby Bull" Diaz was at a crossroads.

Can he still bring it? Were his two previous fights against Paulie Malignaggi an aberration or is he clearly on the downside of his career? It proved to be the latter as Marquez (51-5-1, 37 KOs) dominated Diaz (35-4, 17 KOs) at the Mandalay Bay.

The judges scored the bout, 117-111, 116-112, 118-110. Truth be told, Jerry Roth, who scored the bout, 116-112, was being generous. The fight wasn't nearly that close.

It was a bout that was a far cry from the show the two put on last year. Marquez came out the winner in that fight, two, but it was a much close contest. Marquez won via TKO in the ninth round. But the judges had the bout scored, 76-76, 77-75 (twice). Had Diaz been able to hold on in the ninth, the outcome may have been different.

But Saturday night clearly belonged to the ageless wonder Marquez, 37, who is the WBO lightweight champion.

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As for Marquez' future, he wants to fight Manny Pacquiao. There are several problems with that. A: Marquez is promoted by Golden Boy, while Pacquiao is hooked up with Top Rank. B: Pacquiao is set to take on Antonio Margarito on November 13.

A more likely bout for Marquez could be against one of the leading 140-pounders. Amir Khan, who was in attendance, Tim Bradley, Devon Alexander are three possible candidates.