USA Olympian Vanes Martirosyan (33-0-1) of Glendale, Ca. works out with Hall of Fame trainer Freddie Roach (R) at the Wild Card Boxing Club in Hollywood, Ca.

Martirosyan is preparing for his upcoming vacant WBO Super Middleweight championship battle against unbeaten Demetrius Andrade (19-0) of Providence, R.I. This HBO televised feature fight will take place Saturday, Sept 7 at the Staples Center in Los Angeles, Ca. The main event is Julio Cesar Chavez Jr. vs Bryan Vera, Fightnews.com reports.