Bob Arum said Julio Cesar Chavez could fight Brian Vera next, and eventually, Andre Ward.
R. Martinez-Beltran for WBO belt rounds out S. Martinez-Chavez Jr. card
A WBO junior lightweight bout between Roman Martinez and Miguel Beltran Jr. will be on the undercard of the HBO Pay Per View-televised main event featuring RING middleweight champ Sergio Martinez and WBC beltholder Julio Cesar Chavez Jr. on Sept. 15.

