Saul 'Canelo' Alvarez could be next opponent for Floyd Mayweather Jr.

Mayweather, who beat Robert Guerrero on Saturday, has a fight scheduled for Sept. 14 in Las Vegas. Alvarez, the rising young star from Mexico, appears to be the front-runner for the bout.LAS VEGAS -- Floyd Mayweather Jr. hasn't fought twice within a five-month period since 2006.