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List of Deep champions

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This is a list of Deep champions at each weight class. Deep is a Japan-based mixed martial arts (MMA) promoting and sanctioning organization.

Current champions

Men

DivisionChampionSinceDefensesMegatonweightHeavyweightMiddleweightWelterweightLightweightFeatherweightBantamweightFlyweightStrawweight
JPN Taisei Sekino0
Vacant—
BRA João Batista Yoshimura0
JPN Ibuki Shimada0
JPN Shunta Nomura0
JAP Juri Ohara (interim)0
JPN Jin Aoi1
JPN Ryuya Fukuda1
JPN Yutaro Muramoto0
JPN Sora Sugiyama0

Women

DivisionChampionSinceDefensesOpenweightAtomweightMicroweight
USA Amanda Lucas0
Vacant—
JPN Saori Oshima1

Men's championship history

Megatonweight Championship

::Weight limit: Unlimited

No.NameEventDateReign
(total)Defenses1Kawaguchi vacated the title on December 20, 2010.23Razmadze vacated the title in July 4, 2012.4Hasegawa vacated the title on October 14, 2015 when he started competing at a lower weight class.56—Martinez retired on May 7, 2025. Title was subsequently vacated on June 10, 2025.7
Japan Yusuke Kawaguchi
def. Shunsuke InoueDeep: Megaton Grand Prix 2008 Finals
Tokyo, JapanAugust 2, 2008870 days
Japan Kazuhisa Tazawa
def. Yuji SakuragiDeep 52 Impact
Tokyo, JapanFebruary 25, 2011182 days
Georgia Levan RazmadzeDeep 55 Impact
Tokyo, JapanAugust 26, 2011327 days
Japan Ken Hasegawa
def. Seigo MizuguchiDeep 61 Impact
Tokyo, JapanFebruary 16, 2013970 days
India Jaideep Singh
def. Carlos ToyotaDeep 73 Impact
Tokyo, JapanOctober 17, 2015637 days
Guam Roque MartinezDeep Cage Impact 2017: At Korakuen Hall
Tokyo, JapanJuly 15, 20172,887 days
JPN Ryo Sakai
def. Yukinori Akazawa for interim titleDeep 110 Impact
Tokyo, JapanNovember 12, 2022–1. def Tatsuya Mizuno at Deep 114 Impact on July 2, 2023.
JPN Taisei Sekino
def. Ryo SakaiDeep 126 Impact
Tokyo, JapanAugust 17, 2025
(incumbent)

Heavyweight Championship

::Weight limit: 93 kg (205 lb)

No.NameEventDateReign
(total)Defenses1Nakanishi vacated the title on March 9, 2019 when he retired.
Japan Yoshiyuki Nakanishi
def. Ryuta NojiDeep 47 Impact
Tokyo, JapanApril 17, 20103,248 days

Middleweight Championship

::Weight limit: 84 kg (185.2 lb)

No.NameEventDateReign
(total)Defenses123Chonan vacated the title on December 12, 2007.45Fukuda vacated the title in July 8, 2011 due to being signed with the UFC.678Choi vacated the title in 2016 when he signed with Road FC.910
Japan Ryuki Ueyama
def. Eiji IshikawaDeep 5 Impact
Tokyo, JapanJune 9, 2002914 days
Japan Ryuta SakuraiDeep 17 Impact
Tokyo, JapanDecember 8, 2004425 days
Japan Ryo ChonanDeep 23 Impact
Tokyo, JapanFebruary 5, 2006676 days
Japan Yuichi Nakanishi
def. Riki FukudaDeep 35 Impact
Tokyo, JapanMay 19, 2008408 days
Japan Riki FukudaDeep: 42 Impact
Tokyo, JapanJune 30, 2009738 days
Japan Kazuhiro Nakamura
def. Choi YoungDeep 61 Impact
Tokyo, JapanFebruary 16, 2013673 days
Japan Yoshiyuki NakanishiDeep 70 Impact
Tokyo, JapanDecision 20, 2014296 days
South Korea Choi YoungDeep Cage Impact 2015 in Osaka
Osaka, JapanOctober 11, 2015? days
Japan Tatsuya Mizuno
def. Taisuke OkunoDeep 82 Impact
Tokyo, JapanFebruary 24, 20181,227 days
Brazil João-Batista YoshimuraDeep 102 Impact
Tokyo, JapanJuly 4, 2021days
(incumbent)

Welterweight Championship

::Weight limit: 77 kg (169.7 lb)

No.NameEventDateReign
(total)Defenses123456Chonan won the title in his retirement fight and retired as champion.78Title vacant when Nakamura signed with the UFC.9—Sumimura vacated the title in May 25, 2022 following an injury.1011121314
Japan Jutaro Nakao
def. Daisuke NakamuraDeep 16 Impact
Tokyo, JapanOctober 30, 2004840 days
Japan Hidehiko HasegawaDeep 28 Impact
Tokyo, JapanFebruary 16, 2007528 days
Japan Seichi IkemotoDeep 36 Impact
Osaka, JapanJuly 27, 2008547 days
Japan Yuya ShiraiDeep 45 Impact
Osaka, JapanJanuary 24, 20101,189 days
USA Dan HornbuckleDeep 62 Impact
Tokyo, JapanApril 26, 2013178 days
Japan Ryo ChonanDeep - Tribe Tokyo Night
Tokyo, JapanOctober 20, 20131 day
Japan Yuta Watanabe
def. Taisuke OkunoDeep 66 Impact
Tokyo, JapanApril 29, 2014438 days
Japan Keita NakamuraDeep - Cage Impact 2015
Tokyo, JapanJuly 20, 2015? days
Japan Ryuichiro Sumimura
def. Ken HasegawaDeep - Cage Impact 2017: at Korakuen Hall
Tokyo, JapanJuly 15, 20171775 days
Japan Daichi Abe
def. Gota Yamashita for interim titleDeep - 100 Impact - 20th Anniversary
Bunkyo, Tokyo, JapanFebruary 21, 2021—
Japan Daichi Abe
promoted to undisputed champion—May 25, 2022262 days
Japan Shingo SuzukiDeep 112 Impact
Tokyo, JapanFebruary 11, 2023519 days
Japan Yoichiro SatoDeep 120 Impact
Tokyo, JapanJuly 14, 2024295 days
Japan Kohei KadonoDeep 125 Impact
Tokyo, JapanMay 5, 2025139 days
Japan Ibuki ShimadaDeep Osaka Impact 2025 4th Round
Osaka, JapanSeptember 21, 2025days
(incumbent)

Lightweight Championship

::Weight limit: 70 kg (154.3 lb)

No.NameEventDateReign
(total)Defenses1Mishima vacated the title in February 2006, as he was unable to defend in the mandatory time period.234Bang vacated the title in October 2008.56Hirota vacated the title in April 2012.789—Takeda vacated the belt on March 15, 2022.10111213—
Japan Dokonjonosuke Mishima
def. Tomomi "Taisho" IwamaDeep 18 Impact
Tokyo, JapanFebruary 12, 2005? days
Japan Nobuhiro Obiya
def. Ryan BowDeep 24 Impact
Tokyo, JapanApril 11, 2006312 days
Japan Kazunori YokotaDeep 28 Impact
Tokyo, JapanFebruary 16, 2007459 days
South Korea Bang Seung-hwanDeep 35 Impact
Tokyo, JapanMay 19, 2008? days
Japan Katsunori Kikuno
def. Koichiro MatsumotoDeep: 41 Impact
Tokyo, JapanApril 16, 2009863 days
Japan Mizuto HirotaDeep 55 Impact
Tokyo, JapanAugust 26, 2011? days
Japan Daisuke Nakamura
def. Yasuaki KishimotoDeep 58 Impact
Tokyo, JapanJune 15, 2012326 days
Japan Satoru KitaokaDeep 62 Impact
Tokyo, JapanApril 26, 20132,011 days
Japan Koji TakedaDeep 86 Impact
Tokyo, JapanOctober 27, 20181,235 days
Japan Juri Ohara
def. Ryota Oki for interim titleDeep 102 Impact
Tokyo, JapanJuly 4, 2021—
Japan Juri Ohara
promoted to undisputed champion—March 15, 2022552 days
KOR Lee Song-haDeep 115 Impact: Deep Vs. Black Combat 2
Tokyo, JapanSeptember 18, 2023173 days
JPN Kimihiro EtoDeep 118 Impact
Tokyo, JapanMarch 9, 2024191 days
JPN Shunta NomuraDeep 121 Impact
Tokyo, JapanSeptember 16, 2024days
(incumbent)
Japan Juri Ohara (2)
def. Kouya Kanda for interim titleDeep 128 Impact
Tokyo, JapanNovember 2, 2025days
(incumbent)

Featherweight Championship

::Weight limit: 65 kg (143.3 lb)

No.NameEventDateReign
(total)Defenses1234Matsumoto retired on August 26, 2011, thereby vacating the title.5Yokota vacated the title in May 2016 when he left to compete for ONE Championship.6Imanari vacated the title for unknown reasons.78910—Ushiku vacated the title on December 21, 2023, when he started competing at a lower weight class.1112
Japan Masakazu Imanari
def. Yoshiro MaedaDeep 22 Impact
Tokyo, JapanDecember 2, 2005900 days
Japan Dokonjonosuke MishimaDeep 35 Impact
Tokyo, JapanMay 19, 2008462 days
Japan Takafumi OtsukaDeep: 43 Impact
Tokyo, JapanAugust 23, 2009315 days
Japan Koichiro MatsumotoDeep 48 Impact
Tokyo, JapanJuly 3, 2010420 days
Japan Kazunori Yokota
def. Hideki KadowakiDeep 57 Impact
Tokyo, JapanFebruary 18, 2012? days
Japan Masakazu Imanari (2)
def. Tatsunao NagakuraDeep Cage Impact 2016: Deep vs. WSOF-GC
Tokyo, JapanDecember 17, 2016? days
Japan Hiroto Uesako
def. Koichi IshizukaDeep Cage Impact 2017: At Korakuen Hall
Tokyo, JapanJuly 15, 2017162 days
Japan Takahiro AshidaDeep 81 Impact
Tokyo, JapanDecember 23, 2017309 days
Japan Satoshi YamasuDeep 86 Impact
Tokyo, JapanOctober 27, 2018695 days
Japan Juntaro UshikuDeep 97 Impact
Tokyo, JapanSeptember 20, 20201189 days
Japan Kouya Kanda
def. Hiroto Gomyo for interim titleDeep 112 Impact
Tokyo, JapanFebruary 11, 2023—
Japan Kouya Kanda
promoted to undisputed champion—December 21, 202379 days
Japan Jin AoiDeep 118 Impact
Tokyo, JapanMarch 9, 2024days
(incumbent)

Bantamweight Championship

::Weight limit: 60 kg (132.3 lb)

No.NameEventDateReign
(total)Defenses1Imanari vacated the title on May 31, 2011.234Hata vacated the title.5Otsuka vacated the title for unknown reasons.6Son vacated the title in 2018 when he signed with UFC.78——Henry vacated the title on August 15, 2023 due to being unable to defend his title while signed with UFC.910Yoo vacated the title on March 30, 2024.11
Japan Masakazu Imanari
def. Hiroshi UmemuraDeep 37 Impact
Tokyo, JapanAugust 17, 20081,018 days
Japan Takafumi Otsuka
def. Hiroshi NakamuraDeep 54 Impact
Tokyo, JapanJune 24, 2011240 days
Japan Yoshiro MaedaDeep 57 Impact
Tokyo, JapanFebruary 18, 2012434 days
Japan Daiki HataDeep 62 Impact
Tokyo, JapanApril 26, 2013? days
Japan Takafumi Otsuka (2)
def. Kenji OsawaDeep 66 Impact
Tokyo, JapanApril 29, 2014? days
South Korea Son Jin-soo
def. Toshiaki KitadaDeep 83 Impact
Tokyo, JapanApril 28, 2018? days
Japan Yuki Motoya
def. Makoto KamayaDeep 86 Impact
Tokyo, JapanOctober 27, 2018134 days
USA Victor HenryDeep 88 Impact
Tokyo, JapanMarch 9, 20191,619 days
JPN Kosuke Terashima
def. Daiki Hata for interim titleDeep 107 Impact
Tokyo, JapanMay 8, 2022—
JPN Koichi Ishizuka
def. Kosuke Terashima for interim titleDeep 110 Impact
Tokyo, JapanNovember 12, 2022—
Japan Koichi Ishizuka
promoted to undisputed champion—August 15, 202334 days
KOR Yoo Soo-youngDeep 115 Impact: Deep Vs. Black Combat 2
Tokyo, JapanSeptember 18, 2023194 days
JPN Ryuya Fukuda
def. Kenta TakizawaDeep 121 Impact
Tokyo, JapanSeptember 16, 2024days
(incumbent)

Flyweight Championship

::Weight limit: 56 kg (123.4 lb)

No.NameEventDateReign
(total)Defenses123Motoya vacated the title in April 2016.4—Wada vacated the title on February 28, 2020.5——Takahashi vacated the title on March 29, 2024 to focus on competing in RIZIN.6Fukuda vacated the title on June 10, 2025.7
Japan Yuki Motoya
def. Akira KibeDeep Nagoya Impact
Nagoya, Aichi, JapanJuly 22, 2012400 days
Japan Tatsumitsu WadaDeep 63 Impact
Tokyo, JapanAugust 25, 2013364 days
Japan Yuki Motoya (2)Deep 68 Impact
Tokyo, JapanAugust 23, 2014? days
Japan Tatsumitsu Wada (2)
def. Yuya ShibataDeep 76 Impact
Tokyo, JapanJune 26, 20161,342 days
Japan Makoto Takahashi
def. Yuya Shibata for interim titleDeep 90 Impact
Tokyo, JapanJune 29, 2019—
Japan Makoto Takahashi
promoted to undisputed champion.—February 28, 20201,490 days
Japan Yamato Fujita
def. Kazuki Shibuya for interim titleDeep 100 Impact - 20th Anniversary
Tokyo, JapanFebruary 21, 2021—
Japan Ryuya Fukuda
def. Ryosuke Honda for interim titleDeep 113 Impact
Tokyo, JapanMay 7, 2023—
Japan Ryuya Fukuda
promoted to undisputed champion.—March 29, 2024438 days
Japan Yutaro Muramoto
def. Kenta HayashiDeep 126 Impact
Tokyo, JapanAugust 17, 2025
(incumbent)

Strawweight Championship

::Weight limit: 52 kg (114.6 lb)

No.NameEventDateReign
(total)Defenses123—45
Japan Kanta Sato
def. Kojima SotaDeep Cage Impact 2016: Korakuen Hall
Tokyo, JapanOctober 18, 2016334 days
Japan Haruo OchiDeep 79 Impact
Tokyo, JapanSeptember 16, 20171,073 days
Japan Namiki KawaharaDeep 96 Impact
Tokyo, JapanAugust 23, 20201,372 days
Japan Haruo Ochi
def. Yusuke Uehara for interim titleDeep 117 Impact
Tokyo, JapanDecember 10, 2023—
Japan Haruo Ochi (2)DEEP Tokyo Impact 2024 3rd Round
Tokyo, JapanMay 26, 2024567 days
Japan Sora SugiyamaDEEP Tokyo Impact 2025 6th Round
Tokyo, JapanDecember 14, 2025days
(incumbent)

Women's championship history

Women's Openweight Championship

No.NameEventDateReign
(total)Defenses1
USA Amanda Lucas
def. Yumiko HottaDeep 57 Impact
Tokyo, JapanFebruary 18, 20123,918 daysWhile the title hasn't been active since 2012 and Lucas isn't competing anymore, Deep never announced the vacancy of the title.

Women's Atomweight Championship

::Weight limit: 49 kg (105.8 lb)

No.NameEventDateReign
(total)Defenses12Matsumoto vacated the title on April 17, 2010, following her retirement from the sport.
Japan Hisae Watanabe
def. Satoko ShinashiDeep 25 Impact
Tokyo, JapanAugust 4, 2006367 days
Japan Miku MatsumotoDeep 31 Impact
Tokyo, JapanAugust 5, 2007987 days

Women's Microweight Championship

::Weight limit: 45 kg (99.2 lb)

No.NameEventDateReign
(total)Defenses1Shinashi vacated the title in 2018.2
Japan Satoko Shinashi
def. Sachiko YamamotoDeep 34 Impact
Tokyo, JapanFebruary 22, 20083,962 days
Japan Saori Oshima
def. Mizuki OshiroDeep 97 Impact
Tokyo, JapanSeptember 20, 2020days
(incumbent)

Footnotes

References

References

  1. "【Deep】1・8川口雄介が王座返上、マカオで桜木裕司VS田澤和久の王座決定戦".
  2. "【Deep】無敗の長谷川賢がミドル級転向「RIZINに出たい」".
  3. "【MMA champ Roque Martinez retires after loss in Korea".
  4. "【Deep】Deep二階級制覇・中西良行が3月9日（土）『Deep 88 IMPACT』後楽園ホール大会で引退の10カウントゴング".
  5. "【Deep】2・22長南亮の王座返上でミドル級王座決定トーナメント開催！".
  6. "【Deep】8・26福田力がミドル級王座を返上！王者査定試合で桜井隆多vs柴田勝頼".
  7. "'돌아온 적당주의' 최영 "차정환이 갖고 있는 로드FC 벨트 원해"".
  8. "長南、引退試合でＤＥＥＰ王座奪取 ホーンバックルを判定で下し有終の美".
  9. "【Deep】4・11　雷暗「両目を眼窩底骨折させる」、帯谷も倍返し宣言！".
  10. [http://uwfiteam.com/news/2012-04-08-3427 "Deep Lightweight Champion vacated the Title"]
  11. "【Deep】武田光司と魅津希がベルト返上、大原樹理と伊澤星花が正規王者に「胸を張れる肩書きができました」（大原）".
  12. "廣田瑞人が菊野克紀を下し新王者 松本晃市郎が王座防衛で引退 Deep55沸騰".
  13. "【ONE42】尿酸値と戦う<02>横田一則 「尿酸値だけパスすれば、試合は必ず勝てるので」".
  14. "【Deep】フェザー級王者・牛久絢太郎がバンタム級転向でベルト返上、暫定王者・神田コウヤが正規王者に。2024年は3月9日（土）後楽園大会から開幕".
  15. Takumi Nakamura. (2023-08-15). "【DEEP】ビクター・ヘンリーが王座返上。石司晃一がバンタム級正規王者に。ヘンリーはバシャラット戦へ".
  16. 정성욱. (2024-04-01). "유수영 딥2001 밴텀급 타이틀 반납...로드 투 UFC 진출 때문?".
  17. "6･26　Deep後楽園ホール　【Deepライト級タイトルマッチ】北岡悟vs下石康太　【第4代Deepフライ級王者決定戦】和田竜光vs柴田“MONKEY”有哉".
  18. (2024-02-28). "DEEP 3.1 後楽園ホール：神龍誠の試合、新型コロナウイルスの影響で韓国の選手が来日できず中止に。試合順発表".
  19. 정성욱. (2024-03-29). "神龍誠がDEEPフライ級王座返上、福田龍彌が暫定王者から正規王者に。神龍「このベルトにたくさん成長させてもらった」、福田「統一戦したかったな」".
  20. "Miku Matsumoto Announces Retirement".
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