Hiromasa Ōgikubo

is a Japanese mixed martial artist currently competing as a flyweight in the Rizin Fighting Federation. A professional since 2006, he has also competed for Shooto, Vale Tudo Japan, and The Ultimate Fighter.

He is a former Rizin Flyweight Champion, a former Shooto World Bantamweight (123 lb) Champion, a former Shooto Featherweight Champion and the 2014 Vale Tudo Japan flyweight tournament champion. As an amateur, he was the 12th All Japan Amateur Shooto Featherweight tournament champion and the 4th Tohoku Amateur Shooto Open Tournament champion.

He holds notable wins over the former ONE Championship and Shooto strawweight champion Yosuke Saruta, the former Pancrase Flyweight Champion Kiyotaka Shimizu, the current Pancrase Bantamweight Champion Shintaro Ishiwatari, as well as wins over Alexandre Pantoja and Adam Antolin.

Mixed martial arts career Shooto Hiromasa Ougikubo began his mixed martial arts career in 2005, as an amateur in Shooto. He first competed in the East Japan Amateur Shooto Freshman tournament, where he lost the finals. Following that loss he entered and won the 4th Tohoku Amateur Shooto Open Tournament. His last amateur appearance was at the 12th All Japan Amateur Shooto Featherweight Championship Tournament. Ougikubo defeated all four of his opponents to win the tournament.

Ougikubo made his professional debut with Shooto in 2006, when he defeated Nobuhiro Hayakawa by a unanimous decision. After a draw against Naoki Yahagi, Ougikubo would beat Satoru Ota and Kazuya Tamura to set up a fight in the Shooto Rookie Featherweight tournament finals fight against Yasuhiro Kanayama. He won the bout in the second round by way of a rear naked choke.

Over the next five years, Ougikubo would accumulate a 5-2-1 record, most notably losing to the future Shooto Featherweight Champion Koetsu Okazaki, and winning the Shooto Pacific Rim featherweight title by defeating Teriyuki Matsumoto. In 2012, at Shooto 5th Round, Ougikubo would get a chance to avenge that loss. Hiromasa would win the fight in the third minute of the third round, by way of a rear naked choke, in what was considered, at the time, a major upset. His first title defense was scheduled against the young prospect Kyoji Horiguchi. Horiguchi would defend or reverse the takedowns, deliver ground and pound from the guard, and would eventually submit Ougikubo in the second round.

Looking to bounce back, Ougikubo entered the 2014 Vale Tudo Japan Flyweight tournament. In the quarterfinals he defeated Takeshi Kasugai by a majority decision. In the semifinals he submitted Kana Hyatt in the first round. Proceeding to the finals against Czar Sklavos, Ougikubo came out the victor after 25 minutes, being declared the tournament champion, by a clear unanimous decision.

Returning to Shooto he was scheduled to face Mamoru Yamaguchi. The fight had to cancelled, after Ougikubo dislocated his shoulder.

His next fight was scheduled against Yosuke Saruta, which he won by a unanimous decision. This gave him his second chance at Shooto gold, as he was set to fight the bantamweight champion Masaaki Sugawara. He won the fight in the last seconds of the fifth round by a guillotine choke.

The Ultimate Fighter Considered a standout fighter in the Asian MMA scene, with an impressive fight style and being undefeated in three years, Ougikubo was invited to the 24th season of The Ultimate Fighter, called The Ultimate Fighter: Tournament of Champions.

His first fight was against the EFC flyweight champion Nkazimulo Zulu. Ougikubo entered the fight as a favorite, being the no.5 seed, while Zulu was the no.12 seed. Ougikubo submitted Zulu in the second round, with a rear naked choke.

Next, he faced Adam Antolin, in a fight between two high level grapplers. Ougikubo would aggressively out grapple Antolin, with the American being forced to defend for the entirety of the fight. The Japanese fighter won a clear unanimous decision.

Ougikubo would then face the no.1 seed Alexandre Pantoja. He would force wrestling exchanges with Pantoja, working from his opponents guard, grinding away a unanimous decision win.

In his final fight of the show, Ougikubo fought against Tim Elliott. He fell short for the first time, and lost the finals by a unanimous decision.

Return to Shooto Returning to Shooto he fought against the Ultimate Fighting Championship veteran Danny Martinez.

He would then defend the Shooto World Bantamweight (123 lb) Championship against Tadaaki Yamamoto. He won the fight with a rear naked choke to defend his Shooto title.

Rizin Fighting Federation Ougikubo signed with Rizin and made his debut at Rizin 11, when he was scheduled to rematch Kyoji Horiguchi. Horiguchi once again won, this time through a unanimous decision.

Ougikubo fought the former Shooto and ONE Championship champion Yoshitaka Naito in a Shooto exhibition bout. The fight ended in a no contest after just three minutes.

Making his second bantamweight title defense, Ougikubo faced Kiyotaka Shimizu. While the fight saw little action in the first three rounds, Ougikubo managed to cut his opponent with a head kick. In the fourth round a head clash ended the fight prematurely and went to the judge's scorecards. Hiromasa won a unanimous decision to secure his second title defense.

Returning to Rizin, he fought against the former DEEP champion Yuki Motoya. Ougikubo won a split decision.

During Rizin 20, he fought against Shintaro Ishiwatari. He won another split decision.

He fought against Kai Asakura for the Rizin Bantamweight Championship at Rizin 23. He lost via first-round knockout.

Ougikubo was scheduled to fight Kenta Takizawa during Rizin 25. He defeated Takizawa by unanimous decision.

On January 31, 2021, Ougikubo vacated the Shooto Shooto Bantamweight (123 lb) Championship.

Rizin Bantamweight Grand Prix 2021 Ougikubo faced Takeshi Kasugai in the opening round of the Bantamweight Grand Prix at Rizin 28 on June 13, 2021. Ougikubo won the fight by unanimous decision. Ougikubo faced Takafumi Otsuka in the quarterfinals on September 19, 2021 at Rizin 30. He won the fight by unanimous decision.

In the semi-finals, Ougikubo faced Naoki Inoue on December 31, 2021 at Rizin 33. He won the fight by unanimous decision, and faced Kai Asakura in the tournament finals, which were held during Rizin 33 as well. He won the bout via unanimous decision, winning the 2021 Rizin Bantamweight Grand Prix.

Later Rizin career Ougikubo was booked to face the Road FC Featherweight champion Soo Chul Kim at Rizin 38 on September 25, 2022. Although he was scrambled from start to finish, he was outnumbered by Kim's punches and suffered two facial fractures, resulting in a 0-3 unanimous decision loss.

Moving down to Flyweight, Ougikubo faced Kyoji Horiguchi at Bellator MMA vs. Rizin on December 31, 2022. Facing Horiguchi for the third time in his career, Ougikubo lost the bout via unanimous decision, making it the third straight loss to Horiguchi.

Stepping in as a replacement for an injured Kai Asakura, Ougikubo faced former Bellator Bantamweight Champion Juan Archuleta for the vacant Rizin Bantamweight Championship title on July 30, 2023, as part of the Bellator MMA x Rizin 2 card. He lost the bout via unanimous decision.

Ougikubo faced John Dodson on December 31, 2023, at Rizin 45, and won the bout via unanimous decision.

Ougikubo faced Makoto Takahashi on July 28, 2024 at Super Rizin 3, and won the bout via unanimous decision.

Flyweight champion Ougikubo faced Jose Torres in the quarterfinals of the 2025 Rizin Flyweight Grand Prix, which were held at Super Rizin 4 on July 27, 2025. He won the fight by unanimous decision. Ougikubo faced Alibek Gadzhammatov in the tournament semifinals, held at Rizin 51 on September 28, 2025. He once again won the fight by unanimous decision. Ougikubo faced Yuki Motoya in the Grand Prix finals at Rizin: Shiwasu no Cho Tsuwamono Matsuri on December 31, 2025. He won the fight by unanimous decision.

Ougikubo faced Makoto Takahashi for the Rizin flyweight title on June 6, 2026, at Rizin Landmark 14. He lost the title by unanimous decision.

Championships and accomplishments Amateur titles Shooto 12th All Japan Amateur Shooto Featherweight Tournament Championship 4th Tohoku Amateur Shooto Open Tournament

Professional titles Shooto 2007 Shooto Rookie Featherweight Tournament Champion Shooto Pacific Rim Featherweight Championship (One time; Former) Shooto Flyweight Championship (One time; Former) Two successful title defenses Shooto Bantamweight Championship (One time; Former) Vale Tudo Japan 2014 VTJ Flyweight Tournament Championship Rizin Fighting Federation 2021 Rizin Bantamweight Grand Prix Champion 2025 Rizin Flyweight Grand Prix Champion Rizin Flyweight Championship (One time; Current) eFight.com October 2014 and December 2021 Fighter of the Month

Mixed martial arts record Loss

Makoto Takahashi Decision (unanimous) Rizin Landmark 14

Sendai, Japan Win

Yuki Motoya Decision (unanimous) Rizin: Shiwasu no Cho Tsuwamono Matsuri

Saitama, Japan Win

Alibek Gadzhammatov Decision (unanimous) Rizin 51

Nagoya, Japan Win

Jose Torres Decision (unanimous) Super Rizin 4

Saitama, Japan Win

Makoto Takahashi Decision (unanimous) Super Rizin 3

Saitama, Japan Win

John Dodson Decision (unanimous) Rizin 45

Saitama, Japan Loss

Juan Archuleta Decision (unanimous) Super Rizin 2

Saitama, Japan Loss

Kyoji Horiguchi Decision (unanimous) Bellator MMA vs. Rizin

Saitama, Japan Loss

Soo Chul Kim Decision (unanimous) Rizin 38

Saitama, Japan Win

Kai Asakura Decision (unanimous)

Win

Naoki Inoue Decision (unanimous)

Win

Takafumi Otsuka Decision (unanimous) Rizin 30

Saitama, Japan Win

Takeshi Kasugai Decision (unanimous) Rizin 28

Tokyo, Japan Win

Kenta Takizawa Decision (unanimous) Rizin 25

Osaka, Japan Loss

Kai Asakura KO (knee and soccer kicks) Rizin 23

Yokohama, Japan Win

Shintaro Ishiwatari Decision (split) Rizin 20

Saitama, Japan Win

Yuki Motoya Decision (split) Rizin 17

Saitama, Japan Win

Kiyotaka Shimizu Technical Decision (unanimous) Shooto 30th Anniversary Tour at Korakuen Hall

Tokyo, Japan Loss

Kyoji Horiguchi Decision (unanimous) Rizin 11

Saitama, Japan Win

Tadaaki Yamamoto Submission (rear-naked choke) Professional Shooto 10/15

Chiba, Japan Win

Danny Martinez Decision (unanimous) Professional Shooto 4/23

Chiba, Japan Win

Masaaki Sugawara Technical Submission (guillotine choke) Mobstyles Presents Fight & Mosh

Chiba, Japan Win

Yosuke Saruta Decision (unanimous) Professional Shooto 11/29

Chiba, Japan Win

Czar Sklavos Decision (unanimous) VTJ 6th

Tokyo, Japan Win

Kana Hyatt Submission (rear-naked choke) VTJ 5th in Osaka

Osaka, Japan Win

Takeshi Kasugai Decision (majority) VTJ 4th

Tokyo, Japan Loss

Kyoji Horiguchi Submission (rear-naked choke) Shooto - 2nd Round 2013

Tokyo, Japan Win

Koetsu Okazaki Submission (rear-naked choke) Shooto - 5th Round

Tokyo, Japan Win

Tetsu Suzuki Decision (unanimous) Survivor Tournament Final

Tokyo, Japan Win

Teruyuki Matsumoto Decision (majority) Shooto - Border: Season 3 - Spring Thunder

Osaka, Japan Win

So Tazawa Decision (unanimous) The Way of Shooto 5: Like a Tiger, Like a Dragon

Tokyo, Japan Loss

Eduardo Dantas Submission (rear-naked choke) The Way of Shooto 3: Like a Tiger, Like a Dragon

Tokyo, Japan Loss

Koetsu Okazaki TKO (punches) Shooto - Gig Tokyo 3

Tokyo, Japan Win

Tetsu Suzuki Decision (unanimous) Shooto Tradition 6

Tokyo, Japan Draw

So Tazawa Draw Shooto Tradition 4

Tokyo, Japan Win

Hiroyuki Tanaka TKO (punches) Shooto Tradition 2

Tokyo, Japan Win

Yasuhiro Kanayama Submission (rear-naked choke) Shooto - Rookie Tournament 2007 Final

Tokyo, Japan Win

Kazuya Tamura Submission (rear-naked choke) Shooto - Back To Our Roots 5

Tokyo, Japan Win

Satoru Ota Decision (unanimous) Shooto 2007 - 6/30 in Kitazawa Town Hall

Tokyo, Japan Draw

Naoki Yahagi Draw Shooto - It's Strong Being a Man

Tokyo, Japan Win

Nobuhiro Hayakawa Decision (unanimous) Shooto 2006 - 10/1 in Kitazawa Town Hall

Tokyo, Japan

Mixed martial arts exhibition record NC

Yoshitaka Naito No contest THE SHOOTO OKINAWA vol.1

Okinawa, Japan Loss

Tim Elliott Decision (unanimous)

Win

Alexandre Pantoja Decision (unanimous)

Win

Adam Antolin Decision (unanimous)

Win

Nkazimulo Zulu Submission (rear-naked choke)

Amateur mixed martial arts record Win

Atsushi Asano Decision (unanimous) 12th All Japan Amateur Shooto Championship

Tokyo, Japan Win

Kazuya Tamura Decision (unanimous) 12th All Japan Amateur Shooto Championship

Tokyo, Japan Win

Kobe Takuyaki Decision (unanimous) 12th All Japan Amateur Shooto Championship

Tokyo, Japan Win

Akitoshi Mori Decision (unanimous) 12th All Japan Amateur Shooto Championship

Tokyo, Japan Win

Yuichiro Takase Decision (unanimous) 4th Tohoku Amateur Shooto Open Tournament

Tōhoku, Japan Win

Yoshihiko Matsumoto Decision (unanimous) 4th Tohoku Amateur Shooto Open Tournament

Tōhoku, Japan Win

Kikuchi Decision (unanimous) 4th Tohoku Amateur Shooto Open Tournament

Tōhoku, Japan Loss

Takahiro Ogoshi Decision (unanimous) East Japan Amateur Shooto Freshman tournament

N/A, Japan Win

Yuki Yasunaga Decision (unanimous) East Japan Amateur Shooto Freshman tournament

N/A, Japan Win

Masato Seki Decision (unanimous) East Japan Amateur Shooto Freshman tournament

N/A, Japan Win

Yosuke Ota Decision (unanimous) East Japan Amateur Shooto Freshman tournament

N/A, Japan