Bob Arum said Julio Cesar Chavez could fight Brian Vera next, and eventually, Andre Ward.
Lem's latest: Pacquiao in LA, Calderon retires, Gamboa-Beltran 'close'
Manny Pacquiao began training in Hollywood on Monday for his fourth clash with Juan Manuel Marquez, which is slated for Dec. 8 at The MGM Grand in Las Vegas.

