Kosei Tanaka

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Kosei Tanaka
Real name 田中恒成
Nickname(s) Chukyo no Kaibutu (中京の怪物) "Monster of Chukyo"
Height 5 ft 4 in (1.63 m)
Nationality Japanese
Born (1995-06-15) June 15, 1995 (age 23)
Tajimi, Gifu, Japan
Stance Orthodox
Boxing record
Total fights 11
Wins 11
Wins by KO 7
Losses 0

Kosei Tanaka (田中 恒成, Tanaka Kōsei) is a Japanese professional boxer. He is a two-weight world champion, having held the WBO junior-flyweight title from 2016 to 2017 and the WBO minimumweight title from 2015 to 2016.


Tanaka won several national championships at the amateur level in the light flyweight weight class. He progressed to the quarter-finals of the 2012 AIBA Youth World Championships before losing to Lalitha Prasad Pollipalli.


Tanaka turned pro at the age of 18 in 2013. In November 2014, Tanaka defeated previously unbeaten Ryuji Hara by round 10 TKO to win the OPBF minimumweight title. In his next fight, Tanaka decisioned Julian Yedras (117-111, 117-111, 115-113) to win the WBO minimumweight title.[1] Tanaka holds the Japanese record for winning a world title in the fewest number of fights, at 5 fights.[2] Tanaka's only title defense at minimumweight came against Vic Saludar, whom he knocked out in round 6 after a left hook to the body. Saludar knocked down Tanaka in round 6, and had won every round on all scorecards prior to the stoppage.[3]


In December 2016, Tanaka challenged former minimumweight title holder Moisés Fuentes for the WBO junior-flyweight title. Tanaka dominated Fuentes, dropping him in round 5 before referee Raul Caiz Jr stopped the fight, giving Tanaka a TKO victory. With the win, Tanaka became a two-weight world champion in just 8 fights.[4] Tanaka's first defense came against prospect Ángel Acosta. The former won a wide unanimous decision (117-110, 117-110, 116-111) and dropped Acosta once. Acosta had won all 16 of his previous fights by knockout.[5]

Tanaka's second defense took place in September 2017 against little-known fighter Palangpol CP Freshmart. Tanaka was a huge favorite going into the fight, but Palangpol would prove to be Tanaka's toughest challenger so far, dropping the defending champion once in the first round and trading back-and-forth combinations for the rest of the bout. After a thrilling fight, Tanaka would finally gain the upper hand in round 9, as he knocked down Palangpol and continued to land big combinations as the challenger struggled to connect. Eventually, the referee stepped in and stopped the fight at 1:52 in round 9.[6][7][8]

Tanaka had previously sought a unification bout against WBA titleholder Ryoichi Taguchi in December,[9] but his injuries during the fight against Palangpol would prevent him from fighting on that date.[10]


In December 2017, Tanaka vacated his junior-flyweight title to move to the flyweight division.[11]

Professional boxing record[edit]

Professional record summary
11 fights 11 wins 0 losses
By knockout 7 0
By decision 4 0
No. Result Record Opponent Type Round, time Date Location Notes
12 N/A N/A Japan Sho Kimura N/A – (12) 24 Sep 2018 Japan Takeda Teva Ocean Arena, Nagoya, Japan For WBO flyweight title
11 Win 11–0 Philippines Ronnie Baldonado TKO 9 (10), 2:26 31 Mar 2018 Japan International Conference Hall, Nagoya, Japan
10 Win 10–0 Thailand Palangpol CP Freshmart TKO 9 (12), 1:29 13 Sep 2017 Japan Edion Arena, Osaka, Japan Retained WBO junior-flyweight title
9 Win 9–0 Puerto Rico Ángel Acosta UD 12 20 May 2017 Japan Teva Ocean Arena, Nagoya, Japan Retained WBO junior-flyweight title
8 Win 8–0 Mexico Moisés Fuentes TKO 5 (12), 1:52 31 Dec 2016 Japan Memorial Hall, Gifu, Japan Won vacant WBO junior-flyweight title
7 Win 7–0 Philippines Rene Patilano KO 6 (10), 2:23 28 May 2016 Japan International Conference Hall, Nagoya, Japan
6 Win 6–0 Philippines Vic Saludar KO 6 (12), 2:15 31 Dec 2015 Japan Aichi Prefectural Gymnasium, Nagoya, Japan Retained WBO minimumweight title
5 Win 5–0 Mexico Julian Yedras UD 12 30 May 2015 Japan Park Arena, Komaki, Japan Won vacant WBO minimumweight title
4 Win 4–0 Japan Ryuji Hara TKO 10 (12), 0:50 30 Oct 2014 Japan Korakuen Hall, Tokyo, Japan Won OPBF minimumweight title
3 Win 3–0 Philippines Crison Omayao KO 1 (10), 1:55 20 Jul 2014 Japan International Conference Hall, Nagoya, Japan
2 Win 2–0 Philippines Ronelle Ferreras UD 8 16 Mar 2014 Japan International Conference Hall, Nagoya, Japan
1 Win 1–0 Indonesia Oscar Raknafa UD 6 10 Nov 2013 Japan International Conference Hall, Nagoya, Japan

See also[edit]


External links[edit]

Sporting positions
Regional boxing titles
Preceded by
Ryuji Hara
OPBF minimumweight champion
30 Oct 2014 – 30 May 2015
Won WBO world title
Title next held by
Xiong Chaozhong
World boxing titles
Title last held by
Katsunari Takayama
WBO minimumweight champion
30 May 2015 – 12 Apr 2016
Title next held by
Katsunari Takayama
Title last held by
Donnie Nietes
WBO junior-flyweight champion
31 Dec 2016 – 1 Dec 2017
Title next held by
Ángel Acosta