Third-ranked Daiki Kameda defeated fourth-ranked Mexican Rodrigo Guerrero by unanimous decision to take the vacant IBF super flyweight title on Tuesday.
Kameda was on top on all three judges' scorecards after the bout which didn't really get going until the 10th round, winning 114-112, 116-110, 117-109 at Sun Messe Kagawa.
His victory means all three of the Kameda boxing brothers currently hold world titles. Koki Kameda, the eldest brother, is the WBA bantamweight champion and Tomoki, the youngest, holds the WBO bantamweight title.