Head-to-head · 15 bouts
Tosanoumi Toshio and Iwakiyama Ryuta have met 15 times in recorded sumo. Iwakiyama Ryuta leads 10–5.
Tosanoumi Toshio has won with: frontal push out (1), hand pull down (1), frontal force out (1), thrust down (1), slap down (1).
Iwakiyama Ryuta has won with: frontal force out (5), slap down (3), rear push out (1), outside leg trip (1).
| Tournament | Day | Winner | Technique | Ranks |
|---|---|---|---|---|
| January 2004 | Day 13 | Iwakiyama Ryuta | Frontal force out | Sekiwake 1 East vs Maegashira 2 East |
| March 2004 | Day 4 | Tosanoumi Toshio | Frontal push out | Maegashira 5 West vs Maegashira 4 West |
| November 2004 | Day 13 | Iwakiyama Ryuta | Slap down | Maegashira 3 East vs Maegashira 6 East |
| March 2005 | Day 13 | Tosanoumi Toshio | Hand pull down | Komusubi 1 East vs Maegashira 3 East |
| May 2005 | Day 2 | Tosanoumi Toshio | Frontal force out | Maegashira 4 West vs Sekiwake 1 West |
| May 2006 | Day 4 | Iwakiyama Ryuta | Rear push out | Maegashira 9 East vs Maegashira 12 West |
| July 2006 | Day 2 | Iwakiyama Ryuta | Frontal force out | Maegashira 10 West vs Maegashira 9 West |
| January 2007 | Day 12 | Iwakiyama Ryuta | Frontal force out | Maegashira 10 East vs Maegashira 16 East |
| March 2007 | Day 7 | Iwakiyama Ryuta | Slap down | Maegashira 11 East vs Maegashira 14 West |
| May 2007 | Day 15 | Tosanoumi Toshio | Thrust down | Juryo 1 West vs Maegashira 15 West |
| September 2007 | Day 9 | Tosanoumi Toshio | Slap down | Maegashira 10 East vs Maegashira 8 West |
| January 2008 | Day 10 | Iwakiyama Ryuta | Frontal force out | Maegashira 13 East vs Maegashira 12 West |
| May 2008 | Day 3 | Iwakiyama Ryuta | Slap down | Maegashira 11 East vs Maegashira 12 East |
| July 2008 | Day 11 | Iwakiyama Ryuta | Outside leg trip | Maegashira 14 East vs Maegashira 9 West |
| January 2009 | Day 7 | Iwakiyama Ryuta | Frontal force out | Maegashira 9 East vs Maegashira 11 East |
Every bout between the two that is in this database (March 1958 onwards). Technique names follow NHK WORLD-JAPAN.