Head-to-head · 13 bouts
Nionoumi and Oiwato Yoshiyuki have met 13 times in recorded sumo. Nionoumi leads 8–5.
Nionoumi has won with: slap down (3), frontal push out (2), frontal push down (1), hand pull down (1), rear push out (1).
Oiwato Yoshiyuki has won with: frontal push out (3), frontal thrust out (1), hand pull down (1).
| Tournament | Day | Winner | Technique | Ranks |
|---|---|---|---|---|
| November 2010 | Day 7 | Nionoumi | Frontal push out | Makushita 7 East vs Makushita 4 West |
| July 2011 | Day 15 | Nionoumi | Frontal push out | Makushita 1 East vs Juryo 8 West |
| November 2011 | Day 11 | Nionoumi | Frontal push down | Juryo 12 West vs Juryo 4 West |
| May 2012 | Day 2 | Oiwato Yoshiyuki | Frontal push out | Juryo 9 East vs Juryo 7 West |
| July 2012 | Day 9 | Nionoumi | Hand pull down | Juryo 9 East vs Juryo 10 East |
| September 2012 | Day 13 | Nionoumi | Slap down | Juryo 6 East vs Juryo 7 West |
| November 2012 | Day 11 | Nionoumi | Rear push out | Juryo 11 West vs Juryo 9 West |
| January 2013 | Day 13 | Oiwato Yoshiyuki | Frontal thrust out | Juryo 14 West vs Juryo 5 West |
| July 2013 | Day 5 | Oiwato Yoshiyuki | Frontal push out | Juryo 2 East vs Juryo 4 West |
| March 2014 | Day 4 | Oiwato Yoshiyuki | Frontal push out | Makushita 21 West vs Makushita 20 West |
| September 2015 | Day 4 | Oiwato Yoshiyuki | Hand pull down | Makushita 23 East vs Makushita 22 West |
| January 2017 | Day 10 | Nionoumi | Slap down | Makushita 23 East vs Makushita 22 West |
| March 2017 | Day 14 | Nionoumi | Slap down | Makushita 34 East vs Makushita 40 West |
Every bout between the two that is in this database (March 1958 onwards). Technique names follow NHK WORLD-JAPAN.