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Welterweight MMA · most active 2000s

Kotetsu Boku

26–16 · 43 recorded bouts · 2001–2020

MMA record

26–16

Kotetsu Boku finished 54% of 26 wins inside the distance — the 16th percentile for welterweight MMA, where the median is 73%. No reach is on record, so this page compares record rather than measurements.

200020102020win v Marc Duncan, 2001, submissionwin v Toniko Junior, 2002, koloss v Takaharu Murahama, 2002, submissionwin v Mitsuo Matsumoto, 2002, decisionwin v Takuhito Hida, 2002, decisionwin v Naoki Matsushita, 2003, koloss v Kenichiro Togashi, 2003, submissionloss v Mitsuhiro Ishida, 2003, decisionwin v Takaharu Murahama, 2004, decisionwin v Kohei Yasumi, 2004, decisionwin v Hermes França, 2005, decisionwin v Ryan Bow, 2005, decisionwin v Alexandre Franca Nogueira, 2006, decisionloss v Artur Oumakhanov, 2007, decisionwin v Eiji Mitsuoka, 2007, decisionwin v David Gardner, 2007, decisionwin v Jarkko Latomaki, 2007, kodraw v Kenichiro Togashi, 2007, drawloss v Joachim Hansen, 2008, decisionwin v Yukio Sakaguchi, 2009, koloss v Yusuke Endo, 2009, submissionwin v Yutaka Ueda, 2009, kowin v Yoshihiro Koyama, 2010, decisionwin v Tony Hervey, 2010, decisionloss v Kuniyoshi Hironaka, 2011, decisionwin v Yukinari Tamura, 2011, decisionwin v Zorobabel Moreira, 2012, kowin v Shin Kochiwa, 2012, koloss v Vuyisile Colossa, 2013, decisionloss v Shinya Aoki, 2013, submissionloss v Eduard Folayang, 2014, decisionwin v Arnaud Lepont, 2014, kowin v Major Overall, 2015, kowin v Juntaro Ushiku, 2015, kowin v Timofey Nastyukhin, 2016, koloss v Jadamba Narantungalag, 2016, submissionwin v Vincent Latoel, 2016, koloss v Christian Lee, 2017, kowin v Eric Kelly, 2017, koloss v Thanh Le, 2019, koloss v Bruno Pucci, 2019, submissionloss v Rikuto Shirakawa, 2020, koloss v Jin Aoi, 2020, decision
WON ABOVE·LOST BELOW BAR = STOPPAGE·BROKEN BAR = SUBMISSION·TICK = DECISION 2001–2020

SOURCE·Kotetsu Boku — English Wikipedia (CC BY-SA 4.0)·derived figures computed here·REVIEWED 2026-07-11

How this record is compiled

  1. Measurements come from the fighter's English Wikipedia infobox; the bout list is parsed from the results table on the same article, read on 2026-07-11. Boxing tables are read by header name and MMA records by the fixed column order of the MMA record template — two different parsers, because reading MMA rows as a boxing table returns a fighter's boxing record in place of their real one.
  2. A bout enters the ledger with whatever fields the source states: result, opponent, method, round, year. Any field the source leaves empty stays empty here. A date that cannot be established is left blank rather than inferred, and the bout is still counted.
  3. A no contest is counted and printed as a no contest. It is never folded into the wins, the losses or the draws, and it never disappears to make a total balance.
  4. Where the article's infobox total disagrees with its own results table, both figures are published and each is labelled with where it came from. Nothing is averaged and nothing is reconciled against a second database.
  5. Percentiles rank this fighter among the 299 welterweight MMA fighters in the dataset — the most specific group of at least 30 that this fighter belongs to.

Sources, exclusions and known limits →

Bout record

Every bout the article's own results table lists, in order. A dash is a field the source leaves empty — it is not a zero and it is not a guess.

Bout-by-bout recordAUG 2026
YearResultOpponentMethodRd
2020 L Rikuto Shirakawa KO/TKO3
2020 L Jin Aoi Decision3
2019 L Thanh Le KO/TKO1
2019 L Bruno Pucci Submission1
2017 L Christian Lee KO/TKO1
2017 W Eric Kelly KO/TKO3
2016 W Timofey Nastyukhin KO/TKO1
2016 L Jadamba Narantungalag Submission3
2016 W Vincent Latoel KO/TKO2
2015 W Major Overall KO/TKO2
2015 W Juntaro Ushiku KO/TKO2
2014 L Eduard Folayang Decision3
2014 W Arnaud Lepont KO/TKO1
2013 L Vuyisile Colossa Decision3
2013 L Shinya Aoki Submission2
2012 W Zorobabel Moreira KO/TKO3
2012 W Shin Kochiwa KO/TKO1
2011 L Kuniyoshi Hironaka Decision3
2011 W Yukinari Tamura Decision3
2010 W Yoshihiro Koyama Decision3
2010 W Tony Hervey Decision3
2009 W Yukio Sakaguchi KO/TKO1
2009 L Yusuke Endo Submission1
2009 W Yutaka Ueda KO/TKO1
2008 L Joachim Hansen Decision2
2007 L Artur Oumakhanov Decision3
2007 W Eiji Mitsuoka Decision3
2007 W David Gardner Decision3
2007 W Jarkko Latomaki KO/TKO1
2007 D Kenichiro Togashi Draw3
2006 W Alexandre Franca Nogueira Decision2
2005 W Hermes França Decision2
2005 W Ryan Bow Decision3
2004 W Takaharu Murahama Decision3
2004 W Kohei Yasumi Decision3
2003 W Naoki Matsushita KO/TKO2
2003 L Kenichiro Togashi Submission1
2003 L Mitsuhiro Ishida Decision2
2002 W Toniko Junior KO/TKO1
2002 L Takaharu Murahama Submission2
2002 W Mitsuo Matsumoto Decision2
2002 W Takuhito Hida Decision2
2001 W Marc Duncan Submission2

13 of these opponents have their own page here.

SOURCE·Kotetsu Boku — English Wikipedia (CC BY-SA 4.0)·derived figures computed here·REVIEWED 2026-07-11

What is on record

Measurements
Reachnot recorded
Height69″ (175.3 cm)
Stance—
DivisionWelterweight MMA
competed at 3: featherweight, lightweight, welterweight — compared here against the last
Most active decade2000s — 22 of 43 dated bouts
CountrySouth Korea

Wikipedia carries no reach figure for Kotetsu Boku, so the reach-advantage comparison this site is built on cannot be computed. Everything below comes from the record instead.

2010 2020 win vs Marc Duncan (2001)win vs Toniko Junior (2002)loss vs Takaharu Murahama (2002)win vs Mitsuo Matsumoto (2002)win vs Takuhito Hida (2002)win vs Naoki Matsushita (2003)loss vs Kenichiro Togashi (2003)loss vs Mitsuhiro Ishida (2003)win vs Takaharu Murahama (2004)win vs Kohei Yasumi (2004)win vs Hermes França (2005)win vs Ryan Bow (2005)win vs Alexandre Franca Nogueira (2006)loss vs Artur Oumakhanov (2007)win vs Eiji Mitsuoka (2007)win vs David Gardner (2007)win vs Jarkko Latomaki (2007)draw vs Kenichiro Togashi (2007)loss vs Joachim Hansen (2008)win vs Yukio Sakaguchi (2009)loss vs Yusuke Endo (2009)win vs Yutaka Ueda (2009)win vs Yoshihiro Koyama (2010)win vs Tony Hervey (2010)loss vs Kuniyoshi Hironaka (2011)win vs Yukinari Tamura (2011)win vs Zorobabel Moreira (2012)win vs Shin Kochiwa (2012)loss vs Vuyisile Colossa (2013)loss vs Shinya Aoki (2013)loss vs Eduard Folayang (2014)win vs Arnaud Lepont (2014)win vs Major Overall (2015)win vs Juntaro Ushiku (2015)win vs Timofey Nastyukhin (2016)loss vs Jadamba Narantungalag (2016)win vs Vincent Latoel (2016)loss vs Christian Lee (2017)win vs Eric Kelly (2017)loss vs Thanh Le (2019)loss vs Bruno Pucci (2019)loss vs Rikuto Shirakawa (2020)loss vs Jin Aoi (2020)
winlossdraw / NC2001–2020

Record

MMA record

26–16

44 bouts on record

Finish rate

54%

of wins ended inside the distance — welterweight MMA median 73%, 16th percentile

KO/TKO: 13 (50%)Submission: 1 (4%)Decision: 12 (46%)
  • KO/TKO 50%
  • Submission 4%
  • Decision 46%

The career, bout by bout

43 recorded bouts from 2001 to 2020. Every incumbent shows this as a table you have to read; here it is as a shape you can see.

Career span

20y

2001–2020

Longest unbeaten run

5

without a loss — draws do not break it

Busiest year

2007

5 bouts

Recorded bouts

43

43 with a date

Records in more than one sport

Every incumbent database is siloed by sport. Kotetsu Boku competed in 2, so the records sit together here.

DisciplineWonLostBy KO
MMA261613
Kickboxing13—
Standing questions

What this record does and does not say

What is Kotetsu Boku's record?
26–16 in MMA. That is the aggregate stated in the English Wikipedia infobox; the results table on the same article lists 43 bouts individually.
Does a no contest change a record here?
No. A no contest is not a win, a loss or a draw, and it is never folded into one. It is counted and printed separately, so a 20–0 record with two no contests is shown as exactly that rather than as 22–0 or as 20–0 with the no contests dropped. The same applies to a bout overturned after the fact where the source records the change.
What happens when sources disagree about a fight?
This site publishes one source — the fighter's English Wikipedia article, read on the date printed under every table — and it does not silently reconcile that against anyone else's database. Where the article's own infobox total and its own results table disagree, both are shown and the page says which one each figure came from. Nothing is averaged, and no field is filled in from a second source to make a total balance.

See what every site in this family answers

Published by

Amit Sharma

Auckland real-estate agent and marketer. Builds free, sourced data tools.