Sumo
Sumo is a traditional Japanese full-contact wrestling sport where two wrestlers push, trip, or throw each other. A bout ends when a wrestler steps outside the circular ring or touches the ground with any body part except their feet.
AT A GLANCE
- ERA
- Traditional
- ORIGIN
- Japan
- PLAYERS
- 2 wrestlers
- EQUIPMENT
- Mawashi (loincloth)
- PLAYING AREA
- 4.55 m diameter ring
- DURATION
- Usually < 1 min
- GOVERNING BODY
- JSA
- OLYMPIC
- No
Bout outcomes
| Infraction / Action | Result |
|---|---|
| Stepping outside ring boundary | Loss |
| Body part (except feet) touches ground | Loss |
| Striking with closed fist (kinjite) | Disqualification |
| Hair pulling or eye gouging | Disqualification |
| Unfastened belt (mawashi comes completely off) | Disqualification |
| Year | Event |
|---|---|
| 712 AD | Kojiki text records legendary sumo origin myth |
| 734 AD | First recorded imperial sumo banquet hosted by Emperor Shomu |
| 1185–1333 | Kamakura period adapts sumo for samurai martial training |
| 1684 | Public professional fundraising tournaments sanctioned in Edo |
| 1925 | Tokyo and Osaka associations merge to form Japan Sumo Association |
| 1931 | Standard dohyo ring diameter fixed at 4.55 meters |
How a game works
Two wrestlers face off inside a raised clay ring called a dohyo after performing ritual purification like salt-throwing. Upon the referee's signal, both wrestlers charge each other in an explosive initial collision. The bout is continuous and normally concludes within seconds once one competitor is forced down or out.
Scoring in one line
A bout is won immediately when an opponent touches the ground with any body part other than the soles of their feet, or steps beyond the ring boundary.
Where it came from
Sumo originated in ancient Japan as a ritual performance dedicated to Shinto spirits to pray for bountiful harvests. Over centuries, it evolved into military combat training for samurai before organizing into a regulated professional spectator sport during the Edo period.
Sumo today
Professional sumo is administered by the Japan Sumo Association and features six major 15-day tournaments annually. Competitors reside and train in communal stables (heya), adhering to strict traditional lifestyle rules and ranking hierarchies.
Run a Sumo tournament
Brackets, fixtures and standings in your browser — 1 bout (seconds).
FAQ
Is sumo in the Olympics?
No, professional sumo is not an Olympic sport, though the International Sumo Federation governs amateur sumo recognized by the International Olympic Committee.
How do you win a sumo match?
You win by forcing your opponent outside the 4.55-meter ring or by causing any part of their body above the soles of their feet to touch the ground.
How long does a sumo bout last?
Most sumo matches last between a few seconds and half a minute, though rare endurance standoffs can extend up to a couple of minutes.