Former two division world champion Koki Kameda (23-1, 15 KOs) knocked out faded former world title challenger Cecilio “Boga” Santos (24-15-3, 14 KOs) in round four on Sunday at the Prefectural Gymnasium in Osaka, Japan. With the win, Kameda rebounded from his only loss against Pongsaklek Wonjongkam in March. Santos has now dropped seven of his last nine.
The card also featured Koki’s brother WBA flyweight champion Daiki Kameda (17-2, 11 KOs), who outpointed Rosendo Vega over ten one-sided rounds by scores of 100-90, 100-90, 100-91 in a non-title bout. Daiki is already scheduled to defend against former champion Takefumi Sakata on September 25.