By Miguel Rivera

Cozumel, Mexico - WBC lightweight champion Humberto Soto (56-7-2, 32 KOs) is looking for bigger challenges at a bigger weight. The Mexican champion made the fourth defense of his title on Saturday night with a lopsided ten round technical decision over Japanese challenger Motoki Sasaki (36-9, 23 KOs). After the match, Soto said "I'm going to move up to junior welterweight." Soto wants to target some of lucrative names at the weight - like Amir Khan, Erik Morales, Timothy Bradley, Marcos Maidana, Devon Alexander and several others.