Sumo mono-ii: when the judges climb in and order a rematch
A mono-ii is a judges' conference. When a bout is too close to call, or the judges disagree with the referee, the five ringside judges climb into the ring and discuss what happened. They can uphold the referee's decision, reverse it, or order the bout fought again (torinaoshi).
The rules and roles here are stable across tournaments; for the official explanation see the Japan Sumo Association. Japan Sumo Association ↗
What you are seeing
- The five judges (shimpan) sit at floor level around the ring in black formal kimono; any of them can raise a hand to call the conference.
- The referee (gyoji) stands aside while they talk; a decision is then announced to the hall.
- Common triggers: both wrestlers appear to touch down together, a foot brushes out, or a hair-thin edge finish.
What to watch next
- Watch the wrestlers during the conference - they wait on the ring, composed, while the result hangs.
- Listen for the announcement; the crowd reacts immediately if the referee is overruled.
- If a rematch is ordered, the two fight again within minutes, tired, which often makes for a very different bout.
A common first-timer mistake
Assuming the referee's first call is final. In sumo the judges can and do overrule it on the spot.
Words you may hear
- Mono-ii
- a judges' conference called after a disputed bout
- Shimpan
- the five ringside judges
- Torinaoshi
- a rematch, ordered when the bout is judged too close to decide
Sources and review
Created and photographed in Ryogoku by a Tokyo-based spectator. Facts reviewed against Japan Sumo Association materials on 25 August 2026.