From Barry Hugman's History of World Championship Boxing
2006-01-29 Takashi Koshimoto w pts 12 In-Jin Chi, Kyuden Gym, Fukuoka, Japan - WBC. Referee: Malcolm Bulner. Scorecards: 114-113, 115-112, 111-116.
On 17 February at the Emilio Ibarra Stadium, Sinaloa, Mexico, Humberto Soto retained his WBC ‘interim’ title when stopping Oscar Leon inside nine rounds.