Head-to-head · 15 bouts
Aobayama Hirotoshi and Washuyama Yoshikazu have met 15 times in recorded sumo. Aobayama Hirotoshi leads 9–6.
Aobayama Hirotoshi has won with: frontal force out (4), over arm throw (2), arm lock throw (1), thrust down (1).
Washuyama Yoshikazu has won with: frontal push out (2), thrust down (1), under shoulder swing down (1), frontal force out (1), outside leg trip (1).
| Tournament | Day | Winner | Technique | Ranks |
|---|---|---|---|---|
| November 1971 | Day 11 | Aobayama Hirotoshi | — | Makushita 9 East vs Makushita 6 West |
| July 1974 | Day 5 | Aobayama Hirotoshi | Over arm throw | Juryo 1 East vs Juryo 5 East |
| January 1975 | Day 14 | Aobayama Hirotoshi | Over arm throw | Juryo 9 East vs Juryo 11 East |
| March 1975 | Day 13 | Aobayama Hirotoshi | Frontal force out | Juryo 7 West vs Juryo 6 West |
| May 1975 | Day 3 | Washuyama Yoshikazu | Frontal push out | Juryo 5 East vs Juryo 2 West |
| September 1978 | Day 7 | Aobayama Hirotoshi | Frontal force out | Maegashira 6 East vs Maegashira 10 East |
| March 1979 | Day 4 | Aobayama Hirotoshi | Frontal force out | Maegashira 3 East vs Maegashira 6 East |
| September 1979 | Day 3 | Washuyama Yoshikazu | Thrust down | Maegashira 14 West vs Maegashira 9 West |
| November 1979 | Day 9 | Aobayama Hirotoshi | Frontal force out | Maegashira 6 East vs Maegashira 10 West |
| September 1980 | Day 3 | Washuyama Yoshikazu | Under shoulder swing down | Maegashira 6 East vs Maegashira 10 East |
| November 1980 | Day 8 | Washuyama Yoshikazu | Frontal force out | Maegashira 1 East vs Komusubi 1 West |
| January 1981 | Day 3 | Aobayama Hirotoshi | Arm lock throw | Maegashira 7 West vs Maegashira 2 West |
| March 1981 | Day 4 | Washuyama Yoshikazu | Frontal push out | Maegashira 10 West vs Maegashira 7 West |
| May 1981 | Day 10 | Washuyama Yoshikazu | Outside leg trip | Maegashira 10 East vs Maegashira 3 West |
| May 1982 | Day 2 | Aobayama Hirotoshi | Thrust down | Juryo 5 East vs Juryo 9 East |
Every bout between the two that is in this database (March 1958 onwards). Technique names follow NHK WORLD-JAPAN.