Head-to-head · 15 bouts
Kurama Tatsuya and Koboyama Daizo have met 15 times in recorded sumo. Koboyama Daizo leads 10–5.
Kurama Tatsuya has won with: frontal force out (4), over arm throw (1).
Koboyama Daizo has won with: frontal push out (6), frontal force out (3), rear push out (1).
| Tournament | Day | Winner | Technique | Ranks |
|---|---|---|---|---|
| January 1982 | Day 11 | Koboyama Daizo | Frontal push out | Maegashira 10 West vs Maegashira 9 West |
| March 1983 | Day 13 | Kurama Tatsuya | Frontal force out | Maegashira 12 West vs Maegashira 6 West |
| May 1983 | Day 2 | Kurama Tatsuya | Over arm throw | Komusubi 1 East vs Maegashira 3 East |
| July 1983 | Day 3 | Koboyama Daizo | Frontal push out | Maegashira 7 West vs Maegashira 4 West |
| September 1983 | Day 15 | Koboyama Daizo | Rear push out | Komusubi 1 East vs Maegashira 2 East |
| November 1983 | Day 9 | Koboyama Daizo | Frontal force out | Maegashira 7 West vs Maegashira 4 West |
| May 1984 | Day 2 | Kurama Tatsuya | Frontal force out | Maegashira 7 East vs Maegashira 2 West |
| March 1985 | Day 3 | Koboyama Daizo | Frontal push out | Maegashira 2 East vs Maegashira 10 West |
| May 1985 | Day 9 | Kurama Tatsuya | Frontal force out | Maegashira 6 East vs Maegashira 10 East |
| January 1986 | Day 8 | Koboyama Daizo | Frontal push out | Maegashira 6 East vs Maegashira 12 West |
| March 1986 | Day 1 | Koboyama Daizo | Frontal push out | Maegashira 8 East vs Maegashira 8 West |
| May 1986 | Day 15 | Koboyama Daizo | Frontal push out | Maegashira 11 East vs Maegashira 12 East |
| September 1986 | Day 6 | Kurama Tatsuya | Frontal force out | Maegashira 9 East vs Maegashira 12 West |
| November 1986 | Day 13 | Koboyama Daizo | Frontal force out | Maegashira 13 East vs Juryo 1 East |
| January 1987 | Day 6 | Koboyama Daizo | Frontal force out | Maegashira 13 East vs Maegashira 9 West |
Every bout between the two that is in this database (March 1958 onwards). Technique names follow NHK WORLD-JAPAN.