Head-to-head · 12 bouts
Shimotori Norio and Iwakiyama Ryuta have met 12 times in recorded sumo. Iwakiyama Ryuta leads 9–3.
Shimotori Norio has won with: backward pivot throw (1), frontal push out (1), rear push out (1).
Iwakiyama Ryuta has won with: frontal force out (7), arm lock throw (1), frontal push out (1).
| Tournament | Day | Winner | Technique | Ranks |
|---|---|---|---|---|
| January 2003 | Day 5 | Shimotori Norio | Backward pivot throw | Maegashira 7 West vs Maegashira 5 West |
| March 2003 | Day 3 | Iwakiyama Ryuta | Frontal force out | Maegashira 3 East vs Maegashira 6 East |
| May 2003 | Day 3 | Iwakiyama Ryuta | Frontal force out | Maegashira 11 West vs Maegashira 9 West |
| March 2007 | Day 13 | Shimotori Norio | Frontal push out | Maegashira 11 East vs Maegashira 15 East |
| July 2007 | Day 8 | Shimotori Norio | Rear push out | Juryo 1 East vs Juryo 5 East |
| November 2007 | Day 10 | Iwakiyama Ryuta | Frontal force out | Juryo 1 East vs Juryo 4 East |
| November 2008 | Day 2 | Iwakiyama Ryuta | Arm lock throw | Juryo 1 East vs Juryo 2 East |
| March 2009 | Day 9 | Iwakiyama Ryuta | Frontal force out | Maegashira 10 East vs Maegashira 14 West |
| May 2009 | Day 6 | Iwakiyama Ryuta | Frontal force out | Maegashira 8 East vs Maegashira 10 West |
| September 2009 | Day 3 | Iwakiyama Ryuta | Frontal force out | Maegashira 8 East vs Maegashira 8 West |
| January 2010 | Day 6 | Iwakiyama Ryuta | Frontal force out | Maegashira 14 East vs Maegashira 13 West |
| March 2010 | Day 3 | Iwakiyama Ryuta | Frontal push out | Maegashira 8 East vs Maegashira 10 West |
Every bout between the two that is in this database (March 1958 onwards). Technique names follow NHK WORLD-JAPAN.