Takanofuji Sanzō (born 13 May 1997 as Tsuyoshi Kamiyama, also known as Tsuyoshi Sudario) is a former professional sumo wrestler and current mixed martial artist from Sakai, Ibaraki, Japan. He made his professional debut in March 2013 and his highest rank was jūryō 5. He is the twin brother of former makuuchi division wrestler Takagenji, and they are the first twins to both reach the second highest jūryō division. He won one makushita division championship. He was suspended from the September 2019 tournament after an investigation found he had struck an attendant, and was asked to retire by the Japan Sumo Association. After initially refusing to comply, he retired on 11 October 2019.

He was born as Tsuyoshi Kamiyama in Oyama, Tochigi Prefecture. He has a Japanese father and Filipino mother. He is the older of identical twins, and is distinguished from his brother by the fact that he has a mole near his upper lip. They also have an older sister. They grew up in Sakai, Ibaraki Prefecture. Their sister played soccer in national competitions at high school and the twins both played basketball, representing Ibaraki Prefecture in national competition and coming in third place.

Tsuyoshi is married.

The brothers had no amateur sumo experience but were encouraged by their father to give professional sumo a try. They joined Takanohana stable in March 2013. Tsuyoshi initially wrestled under the shikona of Takayoshitoshi and made his jūryō debut in March 2018. With his brother Takagenji already in the division it was the first time in sumo history that twins had both achieved sekitori status.^[1] However he withdrew partway through that tournament and was suspended from the next for assaulting his personal attendant or tsukebito after a match.^[2][3] He was reportedly angry that the attendant was late in telling him the time of his match, making him late entering the stadium.^[4] His absence resulted in him falling back to the makushita division. His stablemaster, former yokozuna Takanohana, was demoted in the Sumo Association's hierarchy for failing to report the incident to them and subsequently decided to leave the Sumo Association altogether.^[5] Upon the resignation of his stablemaster Takayoshitoshi moved along with his stablemates to Chiganoura stable in October 2018.

He returned to jūryō in March 2019 under his new name of Takanofuji, although he lasted only one tournament before being demoted. In May he won the makushita championship or yūshō with a perfect 7–0 score, ensuring his return to jūryō. In July 2019 he was ranked at jūryō 12, his highest rank to date, with his brother Takagenji making his top makuuchi division debut in the same tournament.^[6] Takanofuji had his best result in the division, an 11–4 record, which ensured a new highest rank of jūryō 5 for the following tournament. However, this was to be his final tournament appearance.

Takanofuji was a yotsu-sumo wrestler, who sought a grip on the mawashi rather than pushing or thrusting. His preferred grip was migi-yotsu, a right hand inside and left hand outside position. His most common winning kimarite was a straightforward yori-kiri or force out.^[13]

After concluding his sumo wrestling career, Takanofuji said in an interview in July 2020 that he was training to become an MMA fighter and hoped to enter a Rizin event.^[17] In order to be eligible to compete in the heavyweight division in mixed martial arts, Sudario lost around 110 pounds (50 kg) before his debut.^[16]

He made his professional debut against James Raideen on September 27 at Rizin 24.^[18] He won the fight via doctor stoppage after the first round.^[19]

Takanofuji made his sophomore appearance in the sport against Ikuhisa Minowa at Rizin 26 on December 31, 2020.^[20] He won the fight via first-round technical knockout.^[21]

Sudario faced Kazushi Miyamoto at Rizin 27 on March 21, 2021.^[22] He won quickly via knockout eight seconds into the bout. Sudario kept punching even as the ref was pulling him off, causing a brawl to break out.^[23] Sudario was subsequently fined with a 25 percent pay cut due to the incident.^[24]

Sudario faced Shoma Shibisai at Rizin 28 on June 13, 2021.^[25] He lost the bout via rear-naked choke in the third round.^[26]

Sudario faced Saint at Rizin 31 on October 24, 2021.^[27] He won the bout via knockout in the first round.^[28]

Sudario faced Hideki Sekine at Rizin 37 on July 31, 2021. He won the fight by a first-round knockout, stopping Sekine 53 seconds into the opening round.^[29]

Sudario faced Janos Csukas on October 23, 2022 at Rizin 39. Sudario won the fight via TKO in the second round.^[30]

Sudario faced Junior Tafa on December 31, 2022 at Rizin 40.^[31] Sudario lost the fight via TKO in the second round.^[32]

Sudario faced Roque Martinez at Rizin Landmark 5 on April 29, 2023.^[33] He won the fight by unanimous decision.^[34]

Sudario was expected to face Todd Duffee at Rizin Landmark 6 on October 1, 2023. However, Duffee was forced to withdraw from the bout on September 28, due to visa issues, and was replaced by Lim Dong-hwan.^[35] Sudario won the fight via TKO in the third round.^[36]

Sudario faced Mikio Ueda on December 31, 2023, at Rizin 45.^[37] He lost the bout vis TKO stoppage at the beginning of the second round.^[38]

^[15]

• List of past sumo wrestlers
• Controversies in professional sumo
• Glossary of sumo terms
• List of male mixed martial artists
• List of current Rizin FF fighters