Olympic gold medal winner Yuriorkis Gamboa (22-0, 16KOs) is putting in work for Saturday's match against fellow unbeaten Darley Perez (28-0, 19KOs) at the Bell Centre in Montreal, Canada. Gamboa moves up to the lightweight division to face Perez in an HBO televised match for the vacant interim-WBA title. Photos by Robert Levesque/A.R. Photozone.