Oscar Collazo TKO5 Edwin Cano Hernandez ... Defending his titles against a Mexican in Mexico, Puerto Rico's Oscar Collazo dominated and stopped Edwin Cano in round five. The 105-pound Collazo retains his WBA and WBO championships. A right to the body was the final blow as Collazo improves to 12-0, while Hernandez falls t0 13-3-1. The fight took place in Cancun.