Daiyubu Ryusen - 大勇武 龍泉 (born March 30, 1983) is a former Mongolian professional sumo wrestler from Ulaanbaatar. He made his debut in March 2001 and wrestled for Shibatayama stable. He reached the juryo division in May 2008. His highest rank was juryo 10 and he retired in July 2010.
Early Life[]
Undrah's grandfather was a Mongolian wrestler (Bokh) and held the rank equivalent of yokozuna. However, Undrah had no experience with Mongolian wrestling unlike many of his Mongolian compatriots. Nonetheless, when Shibatayama oyakata (the 62nd yokozuna Onokuni) came to Mongolia to scout, Undrah outperformed 40 other participants and earned a spot in Shibatayama stable.
Career[]
Early Career[]
He made his debut in March 2001 under the shikona "Daiyuchi" (大勇地). He produced a winning record in his first seven tournaments and was already ranked in sandanme by March 2002. He reached makushita in September 2003 but could not establish himself in the division until March 2005. He changed his shikona to "Daiyubu" (大勇武) in November 2006. In March 2008, Daiyubu was ranked at makushita 4 and won the makushita yusho with a perfect 7-0 record. As a result he was promoted to juryo in the following May 2008 tournament.
Juryo Career[]
Daiyubu managed to defeat a few sekitori veterans such as Chiyohakuho, Sagatsukasa, Kasuganishiki, and Shimotori, but he struggled overall and finished with a lackluster 5-10 record. Since he was ranked at juryo 10, he was demoted back down to makushita in July 2008 and did not manage to return back to juryo.
Later Carer[]
Daiyubu spent majority of his later career in the mid-makushita ranks. In March 2009, he produced a 6-1 record at the rank of makushita 28 and participated in an eight-man playoff for the yusho, however, he lost out in the first round against Sadanofuji. He was regulated back to sandanme in July 2010 after a poor 2-5 record in the previous tournament.
Retirement from Sumo[]
Controversial Retirement[]
After the May 2010 tournament, his stablemaster handed in his retirement papers; the official Shibatayama stable's website cited his retirement due to personal reasons. Due to his low-ranking status at the time his retirement was not announced immediately until the following July tournament. However, on September 6th, 2010, Daiyubu alleged that he was hit by his stablemaster and had his chonmage removed forcibly and was forced to retire. As a result, he sued the Japan Sumo Association and his stablemaster, Shibatayama, 70 million yen in damages. Nevertheless, Shibatayama claimed that Daiyubu had attitude problems, such as skipping training and staying out late, which resulted in his retirement. He reached a settlement with the Kyokai on December 21st, 2012.
Fighting Style[]

Daiyubu defeats Hokutokuni by utchari (backward pivot throw)
Daiyubu is a yotsu-sumo wrestler who favours grappling techniques as opposed to pushing and slapping his opponent. His preferred grip on his opponent's mawashi is migi-yotsu, a left hand outside, right hand inside position. His most common kimarite was yorikiri (force out), and he was fond of employing uwatenage (overarm throw). In May 2002 he defeated Minaminoshima with the rare ipponzeoi (one-armed shoulder throw).
Record[]
Division Results[]
- Total: 211-177-12/388 (57 basho)
- Juryo: 5-10/15 (1 basho)
- Makushita: 133-125-1/258 (37 basho)
- Sandanme: 51-29-11/80 (13 basho)
- Jonidan: 17-11/28 (4 basho)
- Jonokuchi: 5-2/7 (1 basho)
Championships[]
- 1 Makushita Championship (March 2008)
Shikona History[]
- Daiyuchi Ryusen (2001.03 - 2006.09)
- Daiyubu Ryusen (2006.11 - 2010.07)