Head-to-head · 14 bouts
Zaonishiki Toshimasa and Kotogatake Koichi have met 14 times in recorded sumo. Kotogatake Koichi leads 9–5.
Zaonishiki Toshimasa has won with: frontal force out (1), frontal lift out (1), over arm throw (1), beltless armthrow (1), pulling over armthrow (1).
Kotogatake Koichi has won with: frontal lift out (3), over arm throw (3), underarm throw (1), frontal force out (1), over thigh scooping body drop (1).
| Tournament | Day | Winner | Technique | Ranks |
|---|---|---|---|---|
| January 1976 | Day 2 | Kotogatake Koichi | Underarm throw | Juryo 7 East vs Juryo 11 East |
| March 1976 | Day 11 | Kotogatake Koichi | Frontal lift out | Juryo 5 East vs Juryo 9 West |
| January 1977 | Day 1 | Zaonishiki Toshimasa | Frontal force out | Juryo 1 East vs Juryo 1 West |
| March 1977 | Day 1 | Kotogatake Koichi | Frontal lift out | Maegashira 13 East vs Maegashira 12 West |
| July 1977 | Day 14 | Zaonishiki Toshimasa | Frontal lift out | Maegashira 11 East vs Juryo 4 West |
| September 1977 | Day 13 | Zaonishiki Toshimasa | Over arm throw | Juryo 4 East vs Juryo 5 East |
| November 1977 | Day 7 | Kotogatake Koichi | Over arm throw | Juryo 9 West vs Juryo 2 West |
| May 1978 | Day 9 | Kotogatake Koichi | Frontal force out | Juryo 7 East vs Juryo 3 West |
| July 1978 | Day 14 | Kotogatake Koichi | Over arm throw | Juryo 11 East vs Juryo 9 West |
| November 1978 | Day 1 | Zaonishiki Toshimasa | Beltless armthrow | Juryo 6 East vs Juryo 6 West |
| January 1979 | Day 15 | Kotogatake Koichi | Over thigh scooping body drop | Juryo 2 East vs Juryo 8 West |
| May 1982 | Day 7 | Zaonishiki Toshimasa | Pulling over armthrow | Juryo 1 East vs Juryo 11 West |
| November 1982 | Day 9 | Kotogatake Koichi | Over arm throw | Juryo 8 East vs Juryo 5 West |
| January 1983 | Day 6 | Kotogatake Koichi | Frontal lift out | Juryo 10 East vs Juryo 10 West |
Every bout between the two that is in this database (March 1958 onwards). Technique names follow NHK WORLD-JAPAN.