Head-to-head · 19 bouts
Kotochitose Kosei and Hachiya Toshiyuki have met 19 times in recorded sumo. Hachiya Toshiyuki leads 11–8.
Kotochitose Kosei has won with: frontal force out (4), frontal push out (2), thrust down (1), rear push out (1).
Hachiya Toshiyuki has won with: frontal force out (6), outside leg trip (1), inner thigh propping twist down (1), twisting backward knee trip (1), thrust down (1).
| Tournament | Day | Winner | Technique | Ranks |
|---|---|---|---|---|
| March 1978 | Day 14 | Kotochitose Kosei | Frontal push out | Makushita 7 West vs Juryo 13 West |
| March 1979 | Day 3 | Hachiya Toshiyuki | Outside leg trip | Makushita 3 West vs Juryo 12 West |
| July 1979 | Day 6 | Hachiya Toshiyuki | Frontal force out | Juryo 10 East vs Makushita 2 East |
| September 1980 | Day 15 | Kotochitose Kosei | Frontal force out | Juryo 1 East vs Juryo 6 West |
| November 1980 | Day 5 | Kotochitose Kosei | Frontal force out | Juryo 6 East vs Juryo 10 West |
| March 1981 | Day 12 | Hachiya Toshiyuki | Inner thigh propping twist down | Juryo 1 East vs Juryo 11 East |
| November 1981 | Day 2 | Hachiya Toshiyuki | Frontal force out | Maegashira 8 East vs Maegashira 13 East |
| January 1982 | Day 10 | Hachiya Toshiyuki | Frontal force out | Juryo 2 East vs Juryo 4 East |
| March 1982 | Day 7 | Hachiya Toshiyuki | Frontal force out | Juryo 10 East vs Juryo 7 West |
| May 1982 | Day 5 | Kotochitose Kosei | Frontal push out | Juryo 6 East vs Juryo 9 West |
| January 1983 | Day 5 | Kotochitose Kosei | Thrust down | Juryo 4 East vs Juryo 9 West |
| May 1983 | Day 7 | Hachiya Toshiyuki | Frontal force out | Juryo 9 East vs Juryo 1 West |
| September 1983 | Day 7 | Hachiya Toshiyuki | Frontal force out | Juryo 5 East vs Juryo 9 West |
| November 1983 | Day 13 | Kotochitose Kosei | Rear push out | Juryo 8 West vs Juryo 5 West |
| January 1984 | Day 11 | Hachiya Toshiyuki | Twisting backward knee trip | Juryo 2 East vs Juryo 5 West |
| July 1984 | Day 1 | Hachiya Toshiyuki | Thrust down | Juryo 5 East vs Juryo 6 East |
| May 1985 | Day 15 | Kotochitose Kosei | Frontal force out | Juryo 6 East vs Juryo 7 West |
| July 1985 | Day 8 | Hachiya Toshiyuki | Frontal lift out | Juryo 9 East vs Juryo 10 East |
| September 1985 | Day 12 | Kotochitose Kosei | Frontal force out | Juryo 6 East vs Juryo 9 East |
Every bout between the two that is in this database (March 1958 onwards). Technique names follow NHK WORLD-JAPAN.