He breezed through makushita undefeated with two consecutive 7–0 scores to earn promotion to the second jūryō division, whereupon he changed his shikona from Oso to Musōyama, meaning "twin warrior mountain.

He suffered a number of injuries, including a dislocated shoulder and a persistent problem with his left big toe which affected his speed of movement.

[3] He missed the whole of his debut ōzeki tournament through injury and could manage only a 4–11 record on his return, resulting in demotion back to sekiwake.

His time at ōzeki was bedeviled by further injuries which meant he was often merely struggling to maintain his rank instead of challenging for tournament championships and further promotion.

In January 2015 Musōyama was named deputy director of the Refereeing Department,[5] and as a result was one of the chief judges to adjudicate sumo matches.

Sanshō key: F=Fighting spirit; O=Outstanding performance; T=Technique     Also shown: ★=Kinboshi; P=Playoff(s) Divisions: Makuuchi — Jūryō — Makushita — Sandanme — Jonidan — Jonokuchi