Head-to-head · 15 bouts
Asaoka Isao and Oiteyama Hirokuni have met 15 times in recorded sumo. Oiteyama Hirokuni leads 9–6.
Asaoka Isao has won with: frontal push out (5), rear push out (1).
Oiteyama Hirokuni has won with: over arm throw (3), slap down (2), frontal force out (2), rear push out (1), frontal crush out (1).
| Tournament | Day | Winner | Technique | Ranks |
|---|---|---|---|---|
| July 1965 | Day 2 | Oiteyama Hirokuni | Rear push out | Juryo 6 East vs Juryo 7 East |
| September 1965 | Day 10 | Asaoka Isao | Rear push out | Juryo 2 East vs Juryo 7 West |
| November 1965 | Day 15 | Oiteyama Hirokuni | Over arm throw | Juryo 1 East vs Juryo 5 East |
| January 1966 | Day 15 | Asaoka Isao | Frontal push out | Juryo 2 East vs Juryo 7 East |
| March 1966 | Day 10 | Oiteyama Hirokuni | Slap down | Maegashira 14 East vs Juryo 2 East |
| May 1966 | Day 11 | Oiteyama Hirokuni | Over arm throw | Maegashira 14 East vs Maegashira 10 West |
| March 1967 | Day 6 | Asaoka Isao | Frontal push out | Juryo 5 East vs Juryo 2 West |
| May 1967 | Day 13 | Oiteyama Hirokuni | Frontal force out | Juryo 2 East vs Juryo 6 East |
| July 1967 | Day 7 | Asaoka Isao | Frontal push out | Juryo 8 West vs Juryo 2 West |
| September 1967 | Day 13 | Oiteyama Hirokuni | Over arm throw | Juryo 5 East vs Juryo 9 East |
| January 1968 | Day 13 | Asaoka Isao | Frontal push out | Juryo 1 East vs Juryo 6 West |
| July 1968 | Day 11 | Oiteyama Hirokuni | Slap down | Juryo 10 West vs Juryo 4 West |
| September 1968 | Day 10 | Asaoka Isao | Frontal push out | Juryo 13 East vs Juryo 4 West |
| January 1969 | Day 9 | Oiteyama Hirokuni | Frontal force out | Juryo 7 West vs Juryo 3 West |
| March 1969 | Day 7 | Oiteyama Hirokuni | Frontal crush out | Juryo 4 East vs Juryo 11 East |
Every bout between the two that is in this database (March 1958 onwards). Technique names follow NHK WORLD-JAPAN.