Head-to-head · 13 bouts
Kotokasuga Keigo and Koryu Tadaharu have met 13 times in recorded sumo. Koryu Tadaharu leads 7–6.
Kotokasuga Keigo has won with: frontal push down (2), under shoulder swing down (1), frontal push out (1), hand pull down (1), beltless armthrow (1).
Koryu Tadaharu has won with: beltless armthrow (2), frontal push out (2), over arm throw (1), frontal push down (1), frontal thrust out (1).
| Tournament | Day | Winner | Technique | Ranks |
|---|---|---|---|---|
| March 2006 | Day 5 | Koryu Tadaharu | Beltless armthrow | Makushita 4 West vs Makushita 2 West |
| September 2007 | Day 7 | Kotokasuga Keigo | Under shoulder swing down | Juryo 6 East vs Juryo 10 East |
| January 2008 | Day 7 | Kotokasuga Keigo | Frontal push out | Juryo 4 East vs Juryo 1 West |
| March 2008 | Day 3 | Koryu Tadaharu | Frontal push out | Juryo 3 East vs Juryo 2 West |
| May 2009 | Day 1 | Koryu Tadaharu | Frontal push out | Juryo 6 East vs Juryo 5 West |
| July 2009 | Day 9 | Kotokasuga Keigo | Frontal push down | Juryo 2 East vs Juryo 7 East |
| November 2009 | Day 1 | Koryu Tadaharu | Over arm throw | Juryo 6 East vs Juryo 6 West |
| January 2010 | Day 14 | Kotokasuga Keigo | Hand pull down | Maegashira 16 East vs Juryo 2 West |
| March 2010 | Day 15 | Koryu Tadaharu | Frontal push down | Juryo 6 East vs Juryo 6 West |
| July 2010 | Day 3 | Koryu Tadaharu | Beltless armthrow | Juryo 1 East vs Juryo 4 East |
| September 2010 | Day 4 | Kotokasuga Keigo | Frontal push down | Maegashira 11 East vs Maegashira 12 East |
| November 2010 | Day 15 | Kotokasuga Keigo | Beltless armthrow | Maegashira 7 East vs Maegashira 15 East |
| January 2011 | Day 5 | Koryu Tadaharu | Frontal thrust out | Maegashira 12 East vs Maegashira 13 West |
Every bout between the two that is in this database (March 1958 onwards). Technique names follow NHK WORLD-JAPAN.