Head-to-head · 25 bouts
Wakashimazu Mutsuo and Sadanoumi Koji have met 25 times in recorded sumo. Wakashimazu Mutsuo leads 20–5.
Wakashimazu Mutsuo has won with: frontal force out (4), underarm throw (4), frontal lift out (3), over arm throw (3), beltless armthrow (2).
Sadanoumi Koji has won with: frontal force out (4), slap down (1).
| Tournament | Day | Winner | Technique | Ranks |
|---|---|---|---|---|
| March 1980 | Day 2 | Sadanoumi Koji | Frontal force out | Juryo 13 West vs Juryo 9 West |
| May 1980 | Day 14 | Wakashimazu Mutsuo | Frontal lift out | Juryo 8 East vs Juryo 10 West |
| July 1980 | Day 2 | Wakashimazu Mutsuo | Frontal force out | Juryo 4 East vs Juryo 10 East |
| September 1980 | Day 8 | Wakashimazu Mutsuo | Underarm throw | Juryo 8 West vs Juryo 4 West |
| November 1980 | Day 4 | Sadanoumi Koji | Slap down | Juryo 2 East vs Maegashira 12 West |
| March 1981 | Day 11 | Wakashimazu Mutsuo | Arm lock throw | Maegashira 4 East vs Maegashira 10 East |
| May 1981 | Day 4 | Sadanoumi Koji | Frontal force out | Maegashira 9 West vs Maegashira 7 West |
| July 1981 | Day 8 | Wakashimazu Mutsuo | Under shoulder swing down | Maegashira 2 East vs Maegashira 8 East |
| September 1981 | Day 11 | Sadanoumi Koji | Frontal force out | Maegashira 3 East vs Maegashira 8 East |
| November 1981 | Day 1 | Sadanoumi Koji | Frontal force out | Maegashira 4 East vs Maegashira 4 West |
| January 1982 | Day 2 | Wakashimazu Mutsuo | Frontal force out | Komusubi 1 East vs Maegashira 2 West |
| March 1982 | Day 6 | Wakashimazu Mutsuo | Underarm throw | Komusubi 1 East vs Sekiwake 1 West |
| May 1982 | Day 5 | Wakashimazu Mutsuo | Underarm throw | Maegashira 4 East vs Sekiwake 1 West |
| January 1983 | Day 9 | Wakashimazu Mutsuo | Over arm throw | Maegashira 2 West vs Ozeki 2 West |
| March 1983 | Day 6 | Wakashimazu Mutsuo | Frontal force out | Ozeki 2 East vs Maegashira 5 East |
| July 1983 | Day 9 | Wakashimazu Mutsuo | Frontal lift out | Maegashira 3 West vs Ozeki 1 West |
| November 1983 | Day 7 | Wakashimazu Mutsuo | Over arm throw | Ozeki 1 East vs Komusubi 1 East |
| March 1984 | Day 9 | Wakashimazu Mutsuo | Underarm throw | Ozeki 1 East vs Komusubi 1 West |
| May 1984 | Day 8 | Wakashimazu Mutsuo | Frontal lift out | Ozeki 1 East vs Maegashira 1 West |
| September 1984 | Day 2 | Wakashimazu Mutsuo | Frontal force out | Ozeki 1 East vs Maegashira 3 East |
| January 1985 | Day 3 | Wakashimazu Mutsuo | Beltless armthrow | Ozeki 1 East vs Maegashira 2 West |
| March 1985 | Day 13 | Wakashimazu Mutsuo | Beltless armthrow | Maegashira 13 East vs Ozeki 1 West |
| May 1985 | Day 1 | Wakashimazu Mutsuo | Over arm throw | Maegashira 4 West vs Ozeki 1 West |
| September 1985 | Day 2 | Wakashimazu Mutsuo | Pulling over armthrow | Maegashira 3 East vs Ozeki 2 West |
| November 1986 | Day 6 | Wakashimazu Mutsuo | Frontal crush out | Maegashira 3 West vs Ozeki 2 West |
Every bout between the two that is in this database (March 1958 onwards). Technique names follow NHK WORLD-JAPAN.