Kazuto Ioka became a three-weight world champion in just his 18th fight as the Japanese favourite took the WBA flyweight title from Juan Carlos Reveco in Osaka.
Ioka, 26, inflicted just a second loss on the 31 year-old Argentinian in 37 fights and added the 112lb belt to his previous titles at 105 and 108lbs.
After twelve competative rounds, Ioka was handed the decision 116-113 and 115-113 by judges Carlos Sucre and Silvestre Abainza, whilst Raul Caiz had it 114-114, a draw.
Reveco’s C.V now reads 37-2 as new champion Ioka pushes onto 18-1 and moves up the pound for pound ratings with yet another impressive display.
In the co-feature, Katsunari Takayama successfully defended his IBF minimumweight title for the first time since regaining the belt in December.
The 31 year-old took a 90-81, 87-84, 86-85 decision over challenger Fahlan Sakkreerin after the bout was stopped due to a cut suffered by Takayama caused by accidental headbutts.
With the victory, Takayama improves to 29-7, whilst Sakkreerin drops to 27-4-1 in his first world title attempt.
Earlier, Sho Ishida defeated Taiki Eto via a split decision 97-93, 96-95, 95-96 to retain the Japanese super flyweight title, whilst flyweight Ryo Miyazaki knocked out Namphol Sithsaithong in four rounds.
Masayoshi Hashizume, minimumweight Reiya Konishi and flyweight contender Kei Takenaka also recorded wins on the undercard at the Prefectural Gym.