Super flyweight · Japan
Kosei Tanaka 20-3-0 11 KO · 2013–2024
Updated Oct 14, 2026 · Sources: Wikidata, English Wikipedia, Wikipedia (ja), +3
Kosei Tanaka is a super flyweight boxer from Japan, born Jun 15, 1995. Record 20-3-0 with 11 knockouts over 2013–2024. World titles: WBO super flyweight (2024), WBO flyweight (2018–2020), WBO light flyweight (2016–2017), WBO minimumweight (2015–2016). Kosei Tanaka last fought Phumelele Cafu on Oct 16, 2024 and lost by SD over 12 rounds.
Also: Косей Танака · Косэй Танака · โคเซ ทานากะ +10 more 田中恆成 · 田中恒成 · 다나카 고세이 · Kousei Tanaka · Kōsei Tanaka · Косэи Танака · Танака Косэй · Танака, Косэй · 中京の怪物 · 타나카 코세이
Born Jun 15, 1995
Country 🇯🇵 Japan
Stance Orthodox
Height 164 cm
Reach 164 cm
Nickname Dream Boy
Debut Nov 10, 2013
Career 2013–2024
Rounds boxed 197
KO share 55%
Born in Tajimi, Japan
Titles WBO minimumweight · 2015–2016; WBO light flyweight · 2016–2017; WBO flyweight · 2018–2020; WBO super flyweight · 2024
Boxerbook rating 1958 ± 139 · inactive since Oct 2024Why here › Confirmed bouts 22 of 23 · 19 official
Record and next fight Record
20-3-0, 11 KOs · 2013–2024
Next fight
No next fight confirmed
Last result L
WBO world super flyweight title SD 12/12
The record 23 bouts, 2013–2024, newest first. Records under each bout are both boxers going in.
Bouts by source: Wikipedia (ja) · 23, English Wikipedia · 22, Japan Boxing Commission — 試合報告書 · 19, Wikipedia (ru) · 1, WBA Fights Master Scores · 1
L
WBO world super flyweight title SD 12/12
Tanaka 20-2-0 · Cafu 11-0-3
L
For WBO super-flyweight title SD 12/12 · Ariake Arena, Tokyo, 🇯🇵
Tanaka 20-1-0 · Cafu 10-0-3
W
Christian Bacasegua
Won vacant WBO junior-bantamweight title UD 12/12 · Ryogoku Kokugikan, Tokyo, 🇯🇵
Tanaka 19-1-0 · Bacasegua —
W
Pablo Carrillo
TKO 10/10 · Paloma Mizuho Arena, Nagoya, 🇯🇵
Tanaka 18-1-0 · Carrillo —
W
Yanga Sigqibo
UD 10/10 · Takeda Teva Ocean Arena, Nagoya, 🇯🇵
Tanaka 17-1-0 · Sigqibo —
W
Won WBO Asia Pacific junior-bantamweight title TKO 5/12 · Korakuen Hall, Tokyo, 🇯🇵
Tanaka 16-1-0 · Hashizume —
W
SD 10/10 · Nagoya International Conference Hall, Nagoya, 🇯🇵
Tanaka 15-1-0 · Ishida 30-2-0
L
For WBO super-flyweight title TKO 8/12 · Ota Ward General Gymnasium, Ōta, 🇯🇵
Tanaka 15-0-0 · Ioka 25-2-0
W
Retained WBO flyweight title KO 3/12 · Ota Ward General Gymnasium, Tokyo, 🇯🇵
Tanaka 14-0-0 · Tuolehazi 13-3-1
W
Retained WBO flyweight title TKO 7/12 · Takeda Teva Ocean Arena, Nagoya, 🇯🇵
Tanaka 13-0-0 · González 22-2-1
W
UD 12/12 · Memorial Center, Gifu, 🇯🇵
Tanaka 12-0-0 · Taguchi 27-3-2
W
MD 12/12 · Takeda Teva Ocean Arena, Nagoya, 🇯🇵
Tanaka 11-0-0 · Kimura 17-1-2
W
Ronnie Baldonado
TKO 9/10 · Nagoya International Conference Hall, Nagoya, 🇯🇵
Tanaka 10-0-0 · Baldonado —
W
Retained WBO junior-flyweight title TKO 9/12 · Edion Arena, Osaka, 🇯🇵
Tanaka 9-0-0 · Chayanram 14-1-0
W
Retained WBO junior-flyweight title UD 12/12 · Takeda Teva Ocean Arena, Nagoya, 🇯🇵
Tanaka 8-0-0 · Acosta 17-0-0
W
Won vacant WBO junior-flyweight title TKO 5/12 · Memorial Center, Gifu, 🇯🇵
Tanaka 7-0-0 · Fuentes 27-2-1
W
Rene Patilano
KO 6/10 · Nagoya International Conference Hall, Nagoya, 🇯🇵
Tanaka 6-0-0 · Patilano —
W
Retained WBO mini-flyweight title KO 6/12 · Aichi Prefecture Gymnasium, Nagoya, 🇯🇵
Tanaka 5-0-0 · Saludar 11-1-0
W
Julian Yedras
Won vacant WBO mini-flyweight title UD 12/12 · Komaki City Sports Park General Gymnasium Park Arena Komaki, Komaki, 🇯🇵
Tanaka 4-0-0 · Yedras —
W
Won OPBF mini-flyweight title TKO 10/12 · Korakuen Hall, Tokyo, 🇯🇵
Tanaka 3-0-0 · Hara 18-0-0
Show all 23 bouts W
Crison Omayao
KO 1/10 · Nagoya International Conference Hall, Nagoya, 🇯🇵
Tanaka 2-0-0 · Omayao —
W
Ronelle Ferreras
WBA WORLD LIGHT FLYWEIGHT UD 8/8 · Nagoya International Conference Hall, Aichi, 🇯🇵
Tanaka 1-0-0 · Ferreras —
W
Oscar Raknafa
UD 6/6 · Nagoya International Conference Hall, Nagoya, 🇯🇵
Tanaka 0-0-0 · Raknafa —
Amateur career Amateur record 46–5 (Wikipedia )
Ratings now Not in any current ranking.
World titles
Facts
What is Kosei Tanaka's record? Kosei Tanaka's professional record is 20-3-0 with 11 knockouts.
When is Kosei Tanaka's next fight? No next fight is confirmed as of 18 Oct 2026.
Who did Kosei Tanaka fight last? Kosei Tanaka last fought Phumelele Cafu on Oct 16, 2024 and lost by SD over 12 rounds.
Which world titles has Kosei Tanaka held? Kosei Tanaka has held 4 world title reigns: WBO super flyweight (2024), WBO flyweight (2018–2020), WBO light flyweight (2016–2017), WBO minimumweight (2015–2016). Sources Boxerbook ID 7395 · permanent link boxerbook.com/id/7395 . Wikidata (CC0), English Wikipedia (CC BY-SA), photo from the Instagram profile. Last fetched: 2026-10-12. Spot a mistake? Every bout page has a link to report it.