Photo: WBA Featherweight Champion Yuriorkis Gamboa does a quick one-round workout at today’s Media Day at the Top Rank Gym in Las Vegas. Gamboa is fighting on Top Rank’s ‘Battle of the Champions’ , Saturday, Sept. 11 at the Palms Resort Casino in Las Vegas where he will take on IBF Featherweight champion Orlando Salido. Top Rank is promoting in association with Arena Box and Zanfer Promotions. Gamboa vs Salido will be televised on HBO. Stay tuned for a full photo gallery later today with more Gamboa photos, as well as shots of Matt Korobov and Diego Magdaleno.