Head-to-head · 28 bouts
Harumafuji Kohei and Kaio Hiroyuki have met 28 times in recorded sumo. Harumafuji Kohei leads 16–12.
Harumafuji Kohei has won with: frontal push out (5), frontal force out (3), rear push out (2), pulling over armthrow (2), arm grabbing force out (1).
Kaio Hiroyuki has won with: frontal push out (2), arm lock throw (2), thrust down (2), frontal force out (1), frontal crush out (1).
| Tournament | Day | Winner | Technique | Ranks |
|---|---|---|---|---|
| November 2005 | Day 12 | Kaio Hiroyuki | Frontal push out | Maegashira 5 West vs Ozeki 2 West |
| March 2006 | Day 1 | Harumafuji Kohei | Arm grabbing force out | Maegashira 2 East vs Ozeki 2 West |
| May 2006 | Day 3 | Kaio Hiroyuki | Arm lock throw | Komusubi 1 West vs Ozeki 2 West |
| November 2006 | Day 6 | Kaio Hiroyuki | Frontal force out | Maegashira 1 East vs Ozeki 3 West |
| January 2007 | Day 12 | Harumafuji Kohei | Rear push out | Ozeki 2 East vs Maegashira 4 East |
| March 2007 | Day 15 | Kaio Hiroyuki | Arm lock throw | Komusubi 1 East vs Ozeki 2 West |
| May 2007 | Day 8 | Harumafuji Kohei | Frontal push out | Ozeki 2 East vs Sekiwake 1 West |
| July 2007 | Day 5 | Kaio Hiroyuki | Frontal crush out | Ozeki 1 East vs Sekiwake 1 West |
| September 2007 | Day 4 | Kaio Hiroyuki | Thrust down | Ozeki 2 East vs Komusubi 1 West |
| November 2007 | Day 5 | Harumafuji Kohei | Frontal push out | Komusubi 1 East vs Ozeki 2 West |
| January 2008 | Day 6 | Harumafuji Kohei | Frontal force out | Ozeki 2 East vs Sekiwake 1 West |
| March 2008 | Day 7 | Kaio Hiroyuki | Frontal push down | Ozeki 2 East vs Sekiwake 1 East |
| May 2008 | Day 7 | Kaio Hiroyuki | Frontal push out | Sekiwake 1 East vs Ozeki 1 West |
| July 2008 | Day 7 | Harumafuji Kohei | Frontal push out | Ozeki 2 East vs Sekiwake 1 East |
| September 2008 | Day 4 | Harumafuji Kohei | Pulling over armthrow | Ozeki 2 East vs Sekiwake 1 East |
| January 2009 | Day 8 | Harumafuji Kohei | Frontal push out | Ozeki 3 East vs Ozeki 2 West |
| March 2009 | Day 15 | Harumafuji Kohei | Rear push out | Ozeki 2 East vs Ozeki 2 West |
| May 2009 | Day 9 | Harumafuji Kohei | Frontal force out | Ozeki 2 East vs Ozeki 1 West |
| July 2009 | Day 10 | Harumafuji Kohei | Underarm throw | Ozeki 1 East vs Ozeki 2 East |
| September 2009 | Day 14 | Harumafuji Kohei | Beltless armthrow | Ozeki 2 East vs Ozeki 2 West |
| November 2009 | Day 13 | Harumafuji Kohei | Frontal force out | Ozeki 2 East vs Ozeki 2 West |
| January 2010 | Day 10 | Kaio Hiroyuki | Hand pull down | Ozeki 2 West vs Ozeki 1 West |
| March 2010 | Day 14 | Kaio Hiroyuki | Thrust down | Ozeki 1 East vs Ozeki 2 East |
| May 2010 | Day 12 | Harumafuji Kohei | Frontal push out | Ozeki 1 East vs Ozeki 2 West |
| July 2010 | Day 11 | Harumafuji Kohei | fusen | Ozeki 3 West vs Ozeki 1 West |
| September 2010 | Day 11 | Kaio Hiroyuki | Arm bar throw counter | Ozeki 1 East vs Ozeki 2 West |
| January 2011 | Day 13 | Harumafuji Kohei | Pulling over armthrow | Ozeki 1 East vs Ozeki 2 West |
| May 2011 | Day 11 | Kaio Hiroyuki | Arm grabbing force out | Ozeki 2 West vs Ozeki 1 West |
Every bout between the two that is in this database (March 1958 onwards). Technique names follow NHK WORLD-JAPAN.