Lightweight "Supremacy" will be on the line tonight at the Toyota Center in Houston, TX, when world lightweight champion Juan Manuel Marquez defends his title against former lightweight titlist and top contender Juan Diaz. Originally, the The Ring Magazine lightweight championship was the only title on the line in this fight, but after Nate Campbell was stripped of his WBA and WBO belts, both of the organizations agreed to sanction this fight. Belts or no belts, what fans can anticipate this evening is a stylistically brilliant match up between...