Hyun Mi Choi TKO9 Simone Da Silva... Hyun Mi Choi, recognized as a champion by the WBA since her pro debut, and made the ninth defense of her WBA super featherweight title this Saturday with a ninth-round technical knockout against Brazilian softie Simone Da Silva (17-17). Da Silva has now lost four in a row. The North Korean-born Choi (19-0-1), who now lives in South Korea, returned home after having fought in the United States in her last bout and left a great impression in front of her people. She forced the referee to stop the fight in the ninth round when the South American was taking too much punishment.