Mayweather: Pacquiao's a has-been; his career is over

(Photo credit: Esther Lin) By Chris Williams: Unbeaten Floyd Mayweather Jr. (44-0, 26 KO's) came out swinging at the San Antonio press conference with WBA/WBC junior middleweight champion Saul "Canelo" Alvarez this week when one of the fans from the audience screamed at Mayweather to fight Manny Pacquiao. Instead of ignoring the fan, Mayweather said