Undisputed Champion Naoya "The Monster" Inoue 井上尚弥 (23 - 0 - 0, 20 KO - pre-fight record) against Paul Butler (34 - 2 - 0, 22 KO - pre-fight record). Title Fight: WBA (Super), WBC, IBF, WBO, and The Ring bantamweight titles Ariake Arena, Tokyo, Japan, 13 D