Head-to-head · 25 bouts
Fukunohana Koichi and Ryuko Seiho have met 25 times in recorded sumo. Ryuko Seiho leads 13–12.
Fukunohana Koichi has won with: frontal force out (5), frontal crush out (4), over arm throw (1), frontal thrust out (1), twisting underarm throw (1).
Ryuko Seiho has won with: frontal force out (2), under shoulder swing down (2), outside leg trip (2), frontal crush out (2), underarm throw (1).
| Tournament | Day | Winner | Technique | Ranks |
|---|---|---|---|---|
| May 1968 | Day 12 | Fukunohana Koichi | Frontal crush out | Maegashira 3 East vs Maegashira 7 East |
| September 1968 | Day 4 | Ryuko Seiho | Frontal force out | Maegashira 10 East vs Maegashira 10 West |
| November 1968 | Day 2 | Fukunohana Koichi | Frontal force out | Maegashira 6 East vs Maegashira 7 East |
| May 1969 | Day 15 | Ryuko Seiho | Under shoulder swing down | Maegashira 2 East vs Maegashira 7 West |
| July 1969 | Day 9 | Ryuko Seiho | Outside leg trip | Maegashira 1 East vs Maegashira 2 West |
| September 1969 | Day 14 | Ryuko Seiho | Underarm throw | Maegashira 1 East vs Maegashira 4 East |
| November 1969 | Day 6 | Ryuko Seiho | Outside leg trip | Maegashira 8 West vs Maegashira 6 West |
| January 1970 | Day 12 | Ryuko Seiho | Frontal crush out | Maegashira 3 East vs Maegashira 1 West |
| July 1970 | Day 8 | Fukunohana Koichi | Frontal crush out | Maegashira 1 East vs Maegashira 3 East |
| September 1970 | Day 14 | Ryuko Seiho | Frontal crush out | Maegashira 2 East vs Maegashira 11 East |
| November 1970 | Day 10 | Ryuko Seiho | Slap down | Komusubi 1 East vs Maegashira 4 West |
| March 1971 | Day 14 | Fukunohana Koichi | Frontal force out | Maegashira 6 West vs Maegashira 1 West |
| May 1971 | Day 10 | Ryuko Seiho | Backward pivot throw | Komusubi 1 East vs Maegashira 2 West |
| July 1971 | Day 15 | Fukunohana Koichi | Over arm throw | Maegashira 1 East vs Maegashira 6 East |
| July 1973 | Day 10 | Ryuko Seiho | Hand pull down | Maegashira 5 East vs Maegashira 12 West |
| September 1973 | Day 14 | Ryuko Seiho | Under shoulder swing down | Maegashira 10 East vs Maegashira 5 West |
| November 1973 | Day 10 | Fukunohana Koichi | Frontal force out | Maegashira 11 East vs Maegashira 7 West |
| January 1974 | Day 9 | Fukunohana Koichi | Frontal thrust out | Maegashira 5 East vs Maegashira 10 East |
| March 1974 | Day 3 | Fukunohana Koichi | Frontal force out | Maegashira 7 East vs Maegashira 4 West |
| May 1974 | Day 15 | Fukunohana Koichi | Frontal force out | Maegashira 3 East vs Maegashira 7 West |
| July 1974 | Day 2 | Fukunohana Koichi | Frontal crush out | Maegashira 3 East vs Maegashira 4 West |
| September 1974 | Day 10 | Ryuko Seiho | Frontal lift out | Maegashira 7 East vs Maegashira 9 West |
| November 1974 | Day 8 | Fukunohana Koichi | Twisting underarm throw | Maegashira 10 West vs Maegashira 5 West |
| January 1975 | Day 12 | Fukunohana Koichi | Frontal crush out | Maegashira 1 West vs Komusubi 1 West |
| March 1975 | Day 11 | Ryuko Seiho | Frontal force out | Maegashira 8 East vs Maegashira 4 West |
Every bout between the two that is in this database (March 1958 onwards). Technique names follow NHK WORLD-JAPAN.