RIVERSIDE, Calif. – Former world champion Julio Cesar Chavez Jr., super bantamweight contender Alejandro “Cobrita” Gonzalez Jr. and heavyweight contender Chris “The Nightmare” Arreola participated in a media workout on Wednesday at Robert Garcia Boxing Academy in Riverside, Calif., prior to their upcoming fights on Premier Boxing Champions on CBS and SHOWTIME CHAMPIONSHIP BOXING®.  The fights will take place as part of an afternoon-night doubleheader on Saturday, July 18, at the Don Haskins Center in El Paso, Texas, live on CBS Sports (4 p.m. ET/ 1 p.m. PT) and SHOWTIME (10 p.m. ET/7 p.m. PT).

PBC on CBS will kick-off the action with a doubleheader featuring the U.S. debut of undefeated Irish champion Carl Frampton (20-0, 14 KOs), who will defend his IBF Junior Featherweight World Championship against Mexican contender Gonzalez Jr. (25-1-2, 15 KOs) in the 12-round main event.  In the 8/10-round co-feature, heavyweight star Arreola (36-4, 31 KOs), of Los Angeles takes on Cameroonian heavyweight Frederic Kassi (18-3, 10 KOs).

In the main event of the SHOWTIME CHAMPIONSHIP BOXING doubleheader later that evening, Mexican superstar Chavez, Jr. (48-2-1, 32 KOs) meets fellow Mexican brawler Marcos Reyes (33-2, 24 KOs) in a 10-round super middleweight bout.

The 12-round co-main event will feature a pair of top bantamweights, as Puerto Rican Olympian McJoe Arroyo (16-0, 8 KOs) and Arthur Villanueva (27-0, 14 KOs), of the Philippines put their undefeated records on the line for the IBF Bantamweight World Championship.

Julio Cesar Chavez Jr. is the first fighter to train at Robert Garcia’s new boxing academy in Riverside, which opened June 8.  Garcia formerly trained all of his boxers at his well-known gym in Oxnard, Calif.

Julio Cesar Chavez, arguably the greatest Mexican fighter of all time, made an appearance during his son’s workout to show his support and offer words of encouragement.