Masahiro Ōishi

Masahiro Oishi (born November 29, 1968) is a Japanese mixed martial artist. He competes in the Bantamweight and Featherweight divisions.

He has competed for numerous promotions during his career, most notably Shooto, Pancrase and ZST. He is the former Shooto World Featherweight (132 lb) Champion.

Martial arts career Oishi made his debut in 1993, in Shooto, when he faced Yoshiaki Murai, winning a unanimous decision. He would accumulate a 7-5-3- record, but earned a title shot off of a two fight win streak over Masaki Nishizawa and Yoshinobu Ota. During Shooto: To The Top 10, he faced the reigning featherweight champion Mamoru Yamaguchi. He won the fight in the first round by submission. He defended the title versus Hisao Ikeda, before losing it to Ryota Matsune through a unanimous decision.

From there Oishi moved to ZST. He lost to Hideo Tokoro in the opening of the ZST Grand Prix, which was considered an upset at the time. He would go on to accumulate a 3–3 record in ZST, avenging his loss to Tokoro.

Moving to Cage Force, he earned a title shot by beating Paul McVeigh and Tetsu Suzuki. Facing the reigning champion Takeya Mizugaki, he would lose by way of TKO in the second round.

Moving to Pancrase he made history, by becoming the first Shooto champion to fight in Pancrase when he faced Manabu Inoue. He lost a unanimous decision. He would go on to fight for various promotions, achieving a 10-9-2 record.

Championships and Accomplishments Shooto Shooto World Featherweight (132 lb) Championship (One time) One successful title defense

Mixed martial arts record Win

Yuito Hirano Submission (triangle choke) GFG 4

Goshogawara, Japan Loss

Yusuke Yamashita Decision (split) GFG 3

Goshogawara, Japan Loss

Taku Fuita TKO (punches) Fighting NEXUS vol. 31

Tokyo, Japan Loss

Takuya Ogura Submission (armbar) Fighting NEXUS vol. 29

Tokyo, Japan Loss

Toshihiro Shimizu Submission (leg scissor choke) Fighting NEXUS vol. 28

Tokyo, Japan Win

Toru Fujii Decision (Majority) Fighting NEXUS vol. 22

Tokyo, Japan Loss

Shunichi Shimizu Submission (Armbar) GLADIATOR 012

Osaka, Japan Loss

Tatsuya Karasawa Decision (Unanimous) Fighting NEXUS vol. 18

Tokyo, Japan Win

Sung Hoon Jung Submission (Triangle choke) Arzalet Fighting 5

Seoul, South Korea Win

Yong Jae Oh Decision (Unanimous) Arzalet Fighting 4

Seoul, South Korea Win

Jong Moon Bae Submission (Guillotine choke) Arzalet Fighting 3

Seoul, South Korea Loss

Cleber Luciano Submission (Rear naked choke) Arzalet Fighting 2

Curitiba, Brazil Win

Junichi Hirata Submission (Armbar) GRACHAN 25 x BFC Vol. 2

Tokyo, Japan Win

Hirotaka Miyakawa Submission (Armbar) DEEP 75: Impact

Tokyo, Japan Loss

Takeya Takemoto Decision (Unanimous) GRANDSLAM 3: Way of the Cage

Tokyo, Japan Win

Atsushi Tanaka Submission (armbar) Heat: Heat 32

Tokyo, Japan Win

Takaaki Ito Submission (rear-naked choke) Grachan: Grachan 10

Tokyo, Japan Loss

Masakazu Imanari Submission (toe hold) Deep: 59 Impact

Tokyo, Japan Win

Tomoaki Ueyama Submission (armbar) Grachan: Grachan 6

Tokyo, Japan Loss

Yuta Numakura Decision (unanimous) Pancrase: Progress Tour 1

Tokyo, Japan Draw

Tashiro Nishiuchi Draw (majority) Pancrase: Impressive Tour 9

Tokyo, Japan Loss

Abdul Guyirbegov KO (head kick) FEFoMP: Battle of Amur

Blagoveshchensk, Russia Draw

Masaya Takita Draw Pancrase: Impressive Tour 1

Tokyo, Japan Win

Hirokazu Nishimura TKO (corner stoppage) Pancrase: Passion Tour 10

Tokyo, Japan Win

Takumi Murata Submission (triangle choke) Pancrase: Passion Tour 7

Tokyo, Japan Loss

Michael Mortimer TKO (doctor stoppage) Rize 5: Revolution

Chandler, Queensland, Australia Loss

Manabu Inoue Decision (unanimous) Pancrase: Changing Tour 6

Tokyo, Japan Loss

Gustavo Falciroli TKO (punches) Rize 1: Rize MMA

Mansfield, Queensland, Australia Loss

Takeya Mizugaki TKO (punches) GCM: Cage Force 9

Tokyo, Japan Win

Tetsu Suzuki Decision (unanimous) GCM: Cage Force 8

Tokyo, Japan Win

Paul McVeigh TKO (punches) GCM: Cage Force 6

Tokyo, Japan Win

Artemij Sitenkov Submission (triangle choke) K-1 HERO's: HERO's Lithuania 2007

Vilnius, Vilnius County, Lithuania Win

Taiyo Nakahara TKO (eye injury) GCM: Cage Force 4

Tokyo, Japan Win

Wataru Inatsu Submission (armbar) Zst: Zst 13

Tokyo, Japan Draw

Kentaro Imaizumi Draw Zst: Zst 12

Tokyo, Japan Loss

Sergej Grecicho KO (head kick) Zst: Zst 10

Tokyo, Japan Win

Sergej Juskevic Submission (armbar) Shooto Lithuania: Bushido

Vilnius, Vilnius County, Lithuania Win

Masayuki Okude Submission (reverse triangle choke) Zst: Zst 8

Tokyo, Japan Win

Jin Akimoto Technical Submission (armbar) Shooto 2005: 7/30 in Korakuen Hall

Tokyo, Japan Draw

Ryusuke Uemura Draw Zst: Zst 7

Tokyo, Japan Draw

Eugenij Konkov Draw Shooto Lithuania: Chaosas

Vilnius, Vilnius County, Lithuania Loss

Remigijus Morkevicius KO (punches) Zst: Grand Prix 2 Final Round

Tokyo, Japan Win

Hideo Tokoro Decision (split) Zst: Grand Prix 2 Final Round

Tokyo, Japan Win

Stephen Gillinder Submission (armbar) Zst: Grand Prix 2 Opening Round

Tokyo, Japan Loss

Jeff Curran Technical Submission (Guillotine Choke) Zst: Zst 6

Tokyo, Japan Win

Takahiro Uchiyama Submission (armbar) Zst: Zst 5

Tokyo, Japan Loss

Hideo Tokoro Submission (armbar) Zst: Grand Prix Opening Round

Tokyo, Japan Loss

Ryota Matsune Decision (majority) Shooto: 8/10 in Yokohama Cultural Gymnasium

Yokohama, Kanagawa, Japan Draw

Hisao Ikeda Draw Shooto: Treasure Hunt 10

Yokohama, Kanagawa, Japan Win

Mamoru Yamaguchi Submission (triangle armbar) Shooto: To The Top 10

Tokyo, Japan Win

Yoshinobu Ota Submission (rear naked choke) Shooto: To The Top 2

Tokyo, Japan Win

Masaki Nishizawa TKO (punches) Shooto: To The Top 1

Tokyo, Japan Loss

Baret Yoshida Submission (rear naked choke) Shooto: R.E.A.D. 5

Tokyo, Japan Draw

Hiroyuki Abe Draw Shooto: Renaxis 4

Tokyo, Japan Loss

Alexandre Franca Nogueira Submission (armbar) Shooto: Renaxis 1

Tokyo, Japan Loss

Cheyanne Padeken KO (punches) SB 11: SuperBrawl 11

Honolulu, Hawaii, United States Win

Kimihito Nonaka Submission (armbar) Shooto: Gig '98 2nd

Tokyo, Japan Win

Yoshihiro Fujita Technical Submission (kimura) Shooto: Las Grandes Viajes 2

Tokyo, Japan Loss

Hisao Ikeda Decision (unanimous) Shooto: Reconquista 3

Tokyo, Japan Win

Yoshiyuki Takayama Decision (unanimous) Shooto: Gig

Tokyo, Japan Win

Katsuhisa Akasaki Submission (armbar) Shooto: Let's Get Lost

Tokyo, Japan Draw

Hisao Ikeda Draw Shooto: Vale Tudo Junction 2

Tokyo, Japan Draw

Kimihito Nonaka Draw Shooto: Tokyo Free Fight

Tokyo, Japan Loss

Masato Suzuki Submission (armbar) Shooto: Vale Tudo Access 1

Tokyo, Japan Win

Yoshiaki Murai Decision (unanimous) Shooto: Shooto

Tokyo, Japan