Head-to-head · 12 bouts
Wakakoyu Masaya and Okinoumi Ayumi have met 12 times in recorded sumo. Wakakoyu Masaya leads 7–5.
Wakakoyu Masaya has won with: slap down (4), hand pull down (2), beltless armthrow (1).
Okinoumi Ayumi has won with: frontal force out (3), over arm throw (1), underarm throw (1).
| Tournament | Day | Winner | Technique | Ranks |
|---|---|---|---|---|
| March 2007 | Day 9 | Wakakoyu Masaya | Hand pull down | Makushita 16 East vs Makushita 18 West |
| May 2007 | Day 12 | Wakakoyu Masaya | Slap down | Makushita 24 East vs Makushita 29 East |
| September 2008 | Day 9 | Wakakoyu Masaya | Hand pull down | Makushita 1 East vs Makushita 7 West |
| September 2009 | Day 14 | Okinoumi Ayumi | Frontal force out | Juryo 14 West vs Juryo 6 West |
| January 2010 | Day 6 | Okinoumi Ayumi | Over arm throw | Juryo 2 East vs Juryo 4 East |
| November 2010 | Day 1 | Okinoumi Ayumi | Underarm throw | Juryo 1 East vs Maegashira 16 West |
| January 2011 | Day 2 | Wakakoyu Masaya | Slap down | Maegashira 13 East vs Maegashira 14 East |
| July 2011 | Day 6 | Wakakoyu Masaya | Beltless armthrow | Maegashira 3 East vs Maegashira 4 East |
| January 2012 | Day 11 | Wakakoyu Masaya | Slap down | Maegashira 2 East vs Komusubi 1 West |
| May 2012 | Day 3 | Okinoumi Ayumi | Frontal force out | Maegashira 5 East vs Maegashira 6 East |
| July 2012 | Day 10 | Wakakoyu Masaya | Slap down | Maegashira 3 East vs Maegashira 2 West |
| September 2012 | Day 3 | Okinoumi Ayumi | Frontal force out | Maegashira 10 West vs Maegashira 8 West |
Every bout between the two that is in this database (March 1958 onwards). Technique names follow NHK WORLD-JAPAN.