Ryuya Okuwaki

Ryuya Okuwaki, also known as Ryuya Eiwasportsgym in Thailand, is a Japanese Muay Thai fighter. He is the former Rajadamnern, WPMF and IBF Muaythai World mini flyweight champion.
He is the former WMC World Pinweight champion.

𝕏 sushi_Ryuya

Career

Okuwaki made his professional debut against Hanuman Sor. Walitar in June 2016, winning the fight by unanimous decision. He would win four of his next six fights, with his 7-2 record earning him a chance to fight Newjorwan Pumpanmuang for the WMC World Pinweight title. Okuwaki defeated Newjorwan by unanimous decision.
Okuwaki lost his next fight against Phetdeet Wor. Sanprapai by decision, but would rebounded with a two fight win streak. In April 2019, he fought a rematch with Newjorwan Pumpanmuang, for the Muay Siam Isan 105lbs title. Okuwaki once again defeated Newjorwan, this time with a second round head kick knockout. Two months later, Okuwaki fought Petchdet Wor.Sangprapai for the vacant WBC Muaythai World 105lbs title, losing the fight by unanimous decision.
In September 2019, Okuwaki was scheduled to fight Mungkornyok AnnyMuayThai for the Rajadamnern Stadium 105lbs title. He defeated Mungkornyok by unanimous decision.
Okuwaki fought Phetsila MTM Academy for the WPMF World Mini Flyweight title at BOM 2-6. He lost the fight by majority decision. He was once again scheduled to fight for the fight same title two months later, against Udonnoi Bestbet 9955. Okuwaki won the fight by a fourth round knockout.
On July 28, 2021 Okuwaki faced Riku Kazushima at RISE 151. The fight was declared a majority draw despite Kazushima scoring a knockdown in the first round. The fight did not go to an extension round as Kazushima accepted the bout on short notice.
Yoshinari faced Ryuto Oinuma at Rizin 31 - Yokohama on October 24, 2021. He won the bout via majority decision.
Okuwaki fought Thanupit on April 20, 2025. He won in the 2nd round via Technical Knockout.
On October 5, 2025 Okuwaki defended his belt against Waewwaow Wor.Wangprom. He won after 5 rounds via unanimous decision.

Championships and accomplishments

Amateur

2015 Suk Wan Kingtong Real Champion Tournament -42kg Winner
2015 WBC Muay Thai Jr. League All Japan -40kg Champion
2015 SMASHERS -40 kg Champion
2015 Bigbang Amateur -37 kg
2014 All Japan SMASHERS Tournament -40kg Winner
2014 MA Kick Jr -32kg Champion
2013 NJKF Junior Kick -30kg
2012 MA Kick Jr -28kg Champion
2011 MA Kick Jr -25kg Champion
2010 NJKF Junior Kick -25kg Champion

Professional

World Boxing Council Muay Thai
* 2024 WBC Muay Thai World Flyweight Champion
** One successful title defense
Professional Boxing Association of Thailand
* 2023 Thailand 112 lbs Champion
World Professional Muaythai Federation
* 2020 WPMF World Mini Flyweight Champion
Rajadamnern Stadium
* 2019 Rajadamnern Stadium 105 lbs Champion
International Boxing Federation
* 2019 IBF Muay Thai Mini-Flyweight World Champion
Muay Siam
* 2019 Muay Siam Isan 105 lbs Champion
World Muay Thai Council
* 2018 WMC World Pinweight Champion

Awards

eFight.jp
*Fighter of the Month

Fight record