Five-division world champion Floyd Mayweather Jr. has written off Saul 'Canelo' Alvarez as just "another stepping stone, another opponent" ahead of their much-hyped super welterweight title fight in Las Vegas on Saturday. American Mayweather will put his unbeaten record on the line when he challenges the red-haired Mexican for the WBC and WBA super welterweight crowns at the MGM Grand Garden Arena and says he is ready for anything that Alvarez throws his way.