Naoya Inoue unifies the bantamweight division with win over Butler

It was Inoue’s 21st career knockout and it guaranteed a slice of history, with no bantamweight having held all of the titles in the four-belt era

UNDISPUTED: Japans Naoya Inoue (L) and Britains Paul Butler fight during their bantamweight title unification match in Tokyo. Pic: Yuichi Yamazaki/AFP via Getty Images

Naoya Inoue became the first undisputed bantamweight champion in 50 years when he took the WBO title off Britain’s Paul Butler with a commanding performance in Tokyo.

Butler, 34, was given a lesson by the 29-year-old from Japan, who dominated throughout until he ended the contest with a with a right hand to the body followed by a solid left hook and a barrage of unanswered punches that floored Butler.