Kosei Tanaka

World title reigns and bouts

WBO
WBO
WBO
WBO
Super Flyweight
Flyweight
Light Flyweight
Minimumweight
2016
(20 years old)
2017
(21 years old)
2018
(22 years old)
2019
(23 years old)
2020
(24 years old)

Timeline of world title events

    30 May 2015

    Kosei Tanaka beats Julian Yedras via unanimous decision 12/12

    Minimumweight (105 lb)

    Kosei Tanaka becomes the WBO Minimumweight world champion

    31 Dec 2015

    Kosei Tanaka beats Victorio Saludar via knockout 6/12

    Minimumweight (105 lb)

    10 Apr 2016

    Kosei Tanaka's WBO Minimumweight world title reign ends

    31 Dec 2016

    Kosei Tanaka beats Moises Fuentes via knockout 5/12

    Light Flyweight (108 lb)

    Kosei Tanaka becomes the WBO Light Flyweight world champion

    20 May 2017

    Kosei Tanaka beats Angel Acosta via unanimous decision 12/12

    Light Flyweight (108 lb)

    13 Sep 2017

    Kosei Tanaka beats Rangsan Chayanram via knockout 9/12

    Light Flyweight (108 lb)

    1 Dec 2017

    Kosei Tanaka's WBO Light Flyweight world title reign ends

    24 Sep 2018

    Kosei Tanaka beats Sho Kimura via majority decision 12/12

    Flyweight (112 lb)

    Kosei Tanaka becomes the WBO Flyweight world champion

    16 Mar 2019

    Kosei Tanaka beats Ryoichi Taguchi via unanimous decision 12/12

    Flyweight (112 lb)

    24 Aug 2019

    Kosei Tanaka beats Jonathan Gonzalez via knockout 7/12

    Flyweight (112 lb)

    31 Dec 2019

    Kosei Tanaka beats Wulan Tuolehazi via knockout 3/12

    Flyweight (112 lb)

    4 Feb 2020

    Kosei Tanaka's WBO Flyweight world title reign ends

    31 Dec 2020

    Kazuto Ioka beats Kosei Tanaka via knockout 8/12

    Super Flyweight (115 lb)