Head-to-head · 20 bouts
Koboyama Daizo and Daitetsu Tadamitsu have met 20 times in recorded sumo. Koboyama Daizo leads 11–9.
Koboyama Daizo has won with: frontal force out (7), beltless armthrow (2), frontal push down (1), frontal push out (1).
Daitetsu Tadamitsu has won with: frontal force out (6), rear push out (1), pulling over armthrow (1), thrust down (1).
| Tournament | Day | Winner | Technique | Ranks |
|---|---|---|---|---|
| January 1983 | Day 14 | Daitetsu Tadamitsu | Frontal force out | Juryo 3 East vs Juryo 8 East |
| September 1984 | Day 9 | Daitetsu Tadamitsu | Frontal force out | Maegashira 11 East vs Maegashira 7 West |
| November 1984 | Day 9 | Daitetsu Tadamitsu | Rear push out | Maegashira 10 West vs Maegashira 7 West |
| January 1985 | Day 1 | Koboyama Daizo | Frontal force out | Maegashira 4 East vs Maegashira 3 West |
| March 1985 | Day 10 | Daitetsu Tadamitsu | Pulling over armthrow | Maegashira 12 East vs Maegashira 10 West |
| November 1985 | Day 5 | Koboyama Daizo | Frontal force out | Maegashira 7 East vs Maegashira 3 West |
| January 1986 | Day 14 | Daitetsu Tadamitsu | Thrust down | Maegashira 12 West vs Maegashira 10 West |
| March 1986 | Day 10 | Koboyama Daizo | Beltless armthrow | Maegashira 8 East vs Maegashira 7 West |
| May 1986 | Day 10 | Koboyama Daizo | Frontal push down | Maegashira 10 East vs Maegashira 11 East |
| July 1986 | Day 5 | Koboyama Daizo | Frontal push out | Maegashira 7 East vs Maegashira 11 West |
| September 1986 | Day 13 | Koboyama Daizo | Frontal force out | Maegashira 7 East vs Maegashira 9 East |
| January 1987 | Day 4 | Koboyama Daizo | Frontal force out | Maegashira 6 East vs Maegashira 9 West |
| May 1987 | Day 8 | Daitetsu Tadamitsu | Frontal force out | Maegashira 7 West vs Maegashira 1 West |
| July 1987 | Day 2 | Daitetsu Tadamitsu | Frontal force out | Maegashira 11 West vs Maegashira 7 West |
| November 1987 | Day 3 | Daitetsu Tadamitsu | Frontal force out | Maegashira 4 East vs Maegashira 10 West |
| September 1988 | Day 15 | Koboyama Daizo | Frontal force out | Maegashira 11 West vs Maegashira 8 West |
| November 1988 | Day 13 | Koboyama Daizo | Beltless armthrow | Maegashira 11 West vs Maegashira 8 West |
| May 1990 | Day 10 | Koboyama Daizo | Frontal force out | Juryo 7 East vs Juryo 3 West |
| July 1990 | Day 15 | Koboyama Daizo | Frontal force out | Juryo 4 East vs Juryo 6 West |
| September 1990 | Day 3 | Daitetsu Tadamitsu | Frontal force out | Juryo 8 East vs Juryo 10 West |
Every bout between the two that is in this database (March 1958 onwards). Technique names follow NHK WORLD-JAPAN.