Boxing's five-division world champion Floyd Mayweather (44-0, 26KOs), left, and Super Welterweight World Champion Saul "Canelo" Alvarez (42-0-1, 30KOs) of Mexico, right, stand face to face before a news conference, Friday, June 28, 2013 in Miami. The undefeated boxers are on an eleven city tour promoting their Sept. 14 fight at the MGM Grand in Las Vegas.