Masuiyama Daishirō (born 16 November 1948 as Noboru Sawada) is a former sumo wrestler and coach from Hyōgo, Japan.
Weighing barely 100 kg, and prone to injury, he was not able to establish himself in the division until 1972, temporarily dropping back to jūryō where he won his only yūshō or tournament championship in January of that year.
In July 1978 he finally earned promotion to the third highest sekiwake rank, but once again was unable to maintain it, dropping back to maegashira level.
Masuiyama remained in the sumo world as an elder initially under the name Onogawa, and in November 1984 he succeeded his father as head coach of Mihogaseki stable, when the latter reached the retirement age of 65.
He would use his great reflexes and flexible lower back to win with techniques such as uwatenage (overarm throw), uchimuso (inner thigh twist down), katasukashi (shoulder swing down) and other leg and yotsu-sumo moves.
[5] His notable songs include "Sonna Yuko ni horemashita" (そんな夕子にほれました)(1974), "Sonna onna no hitorigoto" (そんな女のひとりごと)(1977) which sold 1.3 million copies, "Otoko no Senaka" (男の背中), "Hisoyakani Hanayakani" (秘そやかに華やかに) (a duet with Naomi Matsui)(2012),"Yuko no Omise" (夕子のお店) (2013), "Fuyuko no blues" (冬子のブルース) (2013) and "A man's cup-sake" (男のコップ酒).
Sanshō key: F=Fighting spirit; O=Outstanding performance; T=Technique Also shown: ★=Kinboshi; P=Playoff(s) Divisions: Makuuchi — Jūryō — Makushita — Sandanme — Jonidan — Jonokuchi