4 Sep 1988
Gilberto Roman beats Kiyoshi Hatanaka via unanimous decision 12/12
Super Flyweight (115 lb)
3 Feb 1991
Kiyoshi Hatanaka beats Pedro Decima via knockout 8/12
Super Bantamweight (122 lb)
Kiyoshi Hatanaka becomes the WBC Super Bantamweight world champion
14 Jun 1991
Daniel Zaragoza beats Kiyoshi Hatanaka via split decision 12/12