Head-to-head · 19 bouts
Kotokaze Koki and Masudayama Yasuhito have met 19 times in recorded sumo. Kotokaze Koki leads 14–5.
Kotokaze Koki has won with: frontal force out (7), frontal push out (4), hand pull down (1), frontal crush out (1), frontal thrust out (1).
Masudayama Yasuhito has won with: frontal push out (2), frontal thrust out (1), rear push out (1), slap down (1).
| Tournament | Day | Winner | Technique | Ranks |
|---|---|---|---|---|
| November 1975 | Day 8 | Kotokaze Koki | Frontal force out | Juryo 13 East vs Juryo 12 West |
| May 1976 | Day 15 | Kotokaze Koki | Frontal force out | Juryo 13 East vs Juryo 2 West |
| September 1976 | Day 11 | Masudayama Yasuhito | Frontal push out | Juryo 7 East vs Juryo 6 West |
| November 1976 | Day 1 | Masudayama Yasuhito | Frontal push out | Juryo 1 East vs Maegashira 13 West |
| January 1977 | Day 13 | Kotokaze Koki | Frontal force out | Maegashira 9 East vs Maegashira 11 West |
| July 1977 | Day 5 | Kotokaze Koki | Frontal force out | Maegashira 13 East vs Maegashira 7 West |
| September 1977 | Day 14 | Masudayama Yasuhito | Frontal thrust out | Maegashira 5 East vs Maegashira 10 West |
| March 1978 | Day 12 | Kotokaze Koki | Hand pull down | Maegashira 3 East vs Maegashira 11 East |
| May 1978 | Day 1 | Masudayama Yasuhito | Rear push out | Maegashira 6 East vs Maegashira 6 West |
| January 1980 | Day 3 | Kotokaze Koki | Frontal push out | Maegashira 14 West vs Maegashira 10 West |
| July 1980 | Day 7 | Kotokaze Koki | Frontal push out | Sekiwake 1 East vs Maegashira 3 East |
| November 1980 | Day 4 | Kotokaze Koki | Frontal force out | Maegashira 3 East vs Maegashira 2 West |
| March 1981 | Day 11 | Masudayama Yasuhito | Slap down | Maegashira 3 West vs Sekiwake 1 West |
| May 1981 | Day 5 | Kotokaze Koki | Frontal push out | Maegashira 1 West vs Sekiwake 1 West |
| November 1982 | Day 11 | Kotokaze Koki | Frontal force out | Maegashira 3 West vs Ozeki 1 West |
| May 1983 | Day 3 | Kotokaze Koki | Frontal crush out | Maegashira 3 West vs Ozeki 1 West |
| July 1983 | Day 7 | Kotokaze Koki | Frontal thrust out | Komusubi 1 West vs Ozeki 2 West |
| September 1983 | Day 4 | Kotokaze Koki | Frontal push out | Ozeki 1 East vs Sekiwake 1 East |
| January 1984 | Day 6 | Kotokaze Koki | Frontal force out | Komusubi 1 West vs Ozeki 1 West |
Every bout between the two that is in this database (March 1958 onwards). Technique names follow NHK WORLD-JAPAN.