By Elisinio Castillo

Roman "Chocolatito" Gonzalez (43-0, 37KOs) could very well move up in weight to 115-pounds in his next fight.

The WBC flyweight champion returns on Saturday night and defense his title against his toughest opponent to date, former beltholder Brian Viloria (36-4, 22KOs). Their bout is the HBO Pay-Per-View co-feature to the middleweight unification between Gennady Golovkin and David Lemieux.

Gonzalez was the world champion at 105-pounds and then captured a title at 108-pounds. He went to Japan last April to stop Akira Yaegashi for the flyweight championship.

At super flyweight there are potential foes like Carlos Cuadras, Kohei Kono (who defends against Koki Kameda on Friday), McJor Arroyoa and Naoya Inoue.

"Roman could fight at 115-pounds right now. I believe that he is ready and is going to dominate easily. I have always said that he will become a four-time world champion and that was even before I was his coach," said Gonzalez's trainer Arnulfo Obando.