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Kosei Tanaka (田中 恒成, Tanaka Kōsei; born 15 June 1995) is a Japanese former professional boxer who competed from 2013 to 2024. He is a four-weight world champion, having held the World Boxing Organization (WBO) mini-flyweight title from 2015 to 2016; the WBO junior-flyweight title from 2016 to 2017; the WBO flyweight title from 2018 to 2020; and the WBO junior-bantamweight title in 2024. Upon winning his first world title in only his fifth bout, he became the fastest Japanese fighter ever to become a world champion. Along with Vasiliy Lomachenko, he is also the fastest ever male fighter to win titles in three weight-classes, having accomplished the feat in only 12 bouts. He also surpassed Oscar De La Hoya to become the fastest male four division champion, setting the bar at 21 fights.
Biography from Wikipedia, available under CC BY-SA 4.0. Shortened. Read the full article.
JapanTajimi, Japan24 Sept 2018 – 31 Jan 2020
31 Dec 2016 – 30 Nov 2017
30 May 2015 – 7 Apr 2016
No professional bouts recorded
Bout-by-bout history is added as results are published and verified. The career record above is the official total.