By Lee Bates
WBO super featherweight champion Ramon “Rocky” Martinez (22-0-1, 13 KOs) will now make the first defense of his title against Vincente Martin Rodriguez (25-2-1, 13 KOs) of Argentina. Rodriguez who is ranked number 9 by the WBO will replace Michael Lozada of Mexico. The main event will feature the anicipated rematch between WBO light flyweight champion Ivan “Iron Boy” Calderon (32-0-1, 6 KOs) against 3-time world title challenger and Manny “Pacman” Pacquiao promoted Rodel Mayol (25-3-1, 19 KOs). Several other entertaining bouts are scheduled including cruiserweight giant, 6′6 unbeaten Carlos Negron against an opponent soon to be announced. None of Negron´s opponents have made it out of the 1st round yet. The event titled “Undefeated Champions” will be distributed in the United States by Integrated Sports for live viewing Saturday September 12th at 9 PM/ET – 6 PM/PT on cable and satellite pay-per-view via IN Demand and DirecTV for a suggested retail price of $29.95. PR Best Boxing (Ivan & Peter Rivera) is the promoter. Site of the card will be the Coliseo de Puerto Rico José Miguel Agrelot in Hato Rey, Puerto Rico.