Head-to-head · 17 bouts
Kotochitose Kosei and Onishiki Ittetsu have met 17 times in recorded sumo. Onishiki Ittetsu leads 16–1.
Kotochitose Kosei has won with: frontal push out (1).
Onishiki Ittetsu has won with: frontal force out (6), over arm throw (4), frontal push out (2), underarm throw (1), twist down (1).
| Tournament | Day | Winner | Technique | Ranks |
|---|---|---|---|---|
| September 1979 | Day 3 | Onishiki Ittetsu | Underarm throw | Juryo 8 East vs Juryo 11 West |
| November 1979 | Day 7 | Onishiki Ittetsu | Frontal force out | Juryo 12 East vs Juryo 4 West |
| January 1980 | Day 6 | Onishiki Ittetsu | Frontal force out | Juryo 8 West vs Juryo 5 West |
| May 1980 | Day 4 | Onishiki Ittetsu | Frontal force out | Juryo 7 West vs Juryo 2 West |
| July 1980 | Day 5 | Onishiki Ittetsu | Over arm throw | Juryo 2 East vs Juryo 8 West |
| November 1980 | Day 7 | Onishiki Ittetsu | Frontal force out | Juryo 6 East vs Juryo 11 East |
| January 1981 | Day 6 | Kotochitose Kosei | Frontal push out | Juryo 5 East vs Juryo 8 East |
| March 1981 | Day 6 | Onishiki Ittetsu | Frontal push out | Juryo 1 East vs Maegashira 12 West |
| July 1981 | Day 4 | Onishiki Ittetsu | Twist down | Maegashira 3 East vs Maegashira 10 East |
| September 1981 | Day 13 | Onishiki Ittetsu | Frontal force out | Maegashira 5 East vs Maegashira 7 East |
| November 1981 | Day 15 | Onishiki Ittetsu | Frontal force out | Maegashira 3 East vs Maegashira 8 East |
| May 1983 | Day 9 | Onishiki Ittetsu | Arm lock throw | Juryo 5 West vs Juryo 1 West |
| July 1983 | Day 8 | Onishiki Ittetsu | Over arm throw | Juryo 4 East vs Juryo 7 West |
| September 1983 | Day 12 | Onishiki Ittetsu | Over arm throw | Juryo 9 West vs Juryo 2 West |
| November 1983 | Day 12 | Onishiki Ittetsu | Over arm throw | Maegashira 13 East vs Juryo 5 West |
| January 1984 | Day 13 | Onishiki Ittetsu | Twisting underarm throw | Juryo 2 East vs Juryo 6 East |
| May 1984 | Day 7 | Onishiki Ittetsu | Frontal push out | Maegashira 14 East vs Maegashira 4 West |
Every bout between the two that is in this database (March 1958 onwards). Technique names follow NHK WORLD-JAPAN.