Sumo Wrestling Rules & Traditions
Everything you need to know about the rules, traditions, and structure of sumo wrestling
How to Win a Sumo Match
A sumo match is won in one of two ways:
- Force your opponent out of the ring (dohyo) — any part of the body touching outside the straw bales (tawara) results in a loss
- Force your opponent to touch the ground with any body part other than the soles of their feet
Matches typically last only seconds to a minute, and rarely longer. There is no time limit — extremely long bouts may be paused for a water break (mizu-iri), after which wrestlers resume from their locked positions. If judges cannot determine a winner in a close bout, they may order a complete rematch called a torinaoshi.
Prohibited Moves (Kinjite)
While sumo allows a wide range of techniques, certain moves are strictly forbidden:
- Striking with a closed fist
- Hair pulling
- Jabbing at the opponent's eyes or solar plexus
- Simultaneously striking both of the opponent's ears with the palms
- Grabbing the opponent's throat (though open-palm throat pushing — nodowa — is allowed)
- Grabbing the front vertical part of the mawashi (the groin area)
- Kicking at the chest or waist
- Bending back fingers
A wrestler who uses a prohibited move will be disqualified and the bout is awarded to their opponent.
Tournament Structure
Professional sumo holds 6 tournaments (basho) per year, each held in odd-numbered months:
- Each tournament lasts 15 days
- Wrestlers in the top two divisions (Makuuchi and Juryo) fight once per day
- Lower division wrestlers fight 7 bouts over the 15 days
- The wrestler with the best record wins the championship (yusho)
- If wrestlers are tied after 15 days, a playoff (kettei-sen) determines the winner
On Basho Picks, you can predict the winner of each day's Makuuchi bouts and track your accuracy on the leaderboard.
The Dohyo (Ring)
- Circular ring, 4.55 meters (14.9 feet) in diameter
- Made of clay, raised about 66 cm (2 feet) above floor level
- Bordered by rice-straw bales (tawara) half-buried in the clay
- A new dohyo is built for each tournament
- A roof (tsuriyane) is suspended above, symbolizing a Shinto shrine
The dohyo is considered sacred ground. A ritual purification ceremony is performed before each tournament to bless the ring, and traditionally only men are permitted to step on it.
Match Day Proceedings
Bouts proceed from lowest to highest rank throughout the day. Top division (Makuuchi) bouts begin around 4:00 PM JST.
Before each bout, wrestlers perform ritual preparation:
- Salt throwing — to purify the ring (Shinto tradition)
- Shiko — leg stomping to drive away evil spirits
- Ritual squatting and staring — to psych out the opponent and build tension
The tachiai (initial charge) begins when both wrestlers place both fists on the ground. The match is officiated by a gyoji (referee), while shinpan (judges) sit ringside to review close calls.
Before each day's matches, make your predictions on Basho Picks and see how you compare.
Key Traditions
Salt Throwing
Wrestlers throw salt into the ring before their bout to purify it, rooted in Shinto tradition. Higher-ranked wrestlers are given more time for this ritual.
Shiko Stomping
The dramatic leg-raising stomp performed to drive away evil spirits and demonstrate strength. This is also a fundamental training exercise.
Chonmage (Topknot)
The traditional topknot hairstyle required of all professional sumo wrestlers. Sekitori-ranked wrestlers (Makuuchi and Juryo) wear the elaborate oicho-mage style during bouts and formal occasions.
Chanko-nabe
The communal hot-pot stew that forms the basis of a wrestler's diet, typically made with chicken, fish, tofu, and vegetables. It is prepared by lower-ranked wrestlers in the stable.
The Mawashi Belt
The thick belt worn during bouts. Sekitori-ranked wrestlers (Makuuchi and Juryo) wear silk mawashi in vibrant colors, while lower-division wrestlers wear black cotton mawashi.
Heya (Stables)
Wrestlers live and train in communal stables (heya) and follow a strict hierarchical lifestyle. Daily life, from eating order to chores, is determined by rank.
Prize Categories
Emperor's Cup (Makuuchi Yusho)
The tournament championship, awarded to the wrestler with the best record in the top division.
Shukun-sho (Outstanding Performance)
Awarded to a wrestler who defeats a Yokozuna or the eventual tournament winner, or who otherwise displays outstanding performance relative to his rank.
Kanto-sho (Fighting Spirit)
Awarded for showing exceptional fighting spirit and determination throughout the tournament.
Gino-sho (Technique)
Awarded for displaying superior technical skill and a diverse repertoire of winning techniques.
Kinboshi (Gold Star)
A special honor awarded to a Maegashira-ranked wrestler who defeats a Yokozuna. Each kinboshi results in a permanent salary bonus.
Promotion & Demotion
Rank changes are based on a wrestler's win-loss record each tournament:
- 8+ wins (kachi-koshi) — generally leads to promotion
- 7 or fewer wins (make-koshi) — generally leads to demotion
Special rules apply at the highest ranks:
- Yokozuna — cannot be demoted. A Yokozuna who performs poorly is expected to retire rather than face demotion.
- Ozeki — uses the kadoban system. An Ozeki with a losing record is placed on probation. A second consecutive losing record results in demotion to Sekiwake.
To learn more about the rank hierarchy, see the Sumo Ranks guide.