What is Sumo?
Sumo is Japan’s traditional form of wrestling, in which two wrestlers (rikishi) compete on a raised clay ring called a “dohyo” (4.55 meters in diameter). Victory is achieved by forcing the opponent out of the ring or making any part of their body other than the soles of their feet touch the ground. Far more than a sport, sumo traces its origins to ancient Shinto rituals, and ceremonial elements — salt-throwing to purify the ring, the stomping “shiko,” and the ring-entering ceremony — remain central to every bout.
Six Grand Sumo tournaments (honbasho) are held annually, each lasting 15 days: January, May, and September in Tokyo’s Ryogoku Kokugikan, March in Osaka, July in Nagoya, and November in Fukuoka. Wrestlers are ranked in a strict hierarchy called the “banzuke,” from the supreme yokozuna down to the lowest jonokuchi division. In recent decades, wrestlers from Mongolia, Georgia, Bulgaria, and other countries have risen to sumo’s highest ranks, bringing an international dimension to this ancient sport.
History of Sumo
Mythology and Ancient Times: Sacred Origins
Sumo’s origins are rooted in Japanese mythology. The Kojiki records a contest of strength between the gods Takemikazuchi and Takeminakata — considered the mythological birth of sumo. In antiquity, sumo was performed as a Shinto agricultural rite to divine the harvest. During the Nara and Heian periods, it was formalized as “sumai no sechi-e,” a court ceremony held before the emperor that continued for over 300 years.
Sengoku to Edo Period: Popular Entertainment
The warlord Oda Nobunaga was a noted sumo enthusiast who gathered wrestlers for exhibition matches. In the Edo period, sumo flourished as mass entertainment. “Kanjin-zumo” — tournaments held to raise funds for temple repairs — led to regular professional events. Legendary wrestlers like Tanikaze, Onogawa, and Raiden emerged, and the foundations of modern sumo were established: the banzuke ranking system, the ring-entering ceremony, decorative aprons (kesho-mawashi), and the topknot hairstyle (mage).
Modern Era: Establishment as the National Sport
During the Meiji era, sumo briefly faced decline amid Westernization, but an imperial viewing restored its status. The first Kokugikan was built in Ryogoku in 1909. After World War II, radio and television broadcasts made sumo a nationwide phenomenon. The sport entered successive golden ages — the Kashiwa-Ho era (Taiho and Kashiwado), the dominance of Chiyonofuji, and the Mongolian era of Asashoryu and Hakuho. Grand Sumo remains one of Japan’s most popular and tradition-rich professional sports.
Wrestler Rankings
Yokozuna (Grand Champion)
The pinnacle of sumo. Only wrestlers deemed to possess both overwhelming skill and “dignity befitting the rank” are promoted. Yokozuna cannot be demoted — if performance declines, retirement is expected. The white rope (tsuna) worn during the ring-entering ceremony is the most iconic symbol of sumo.
Ozeki
The second-highest rank, achieved through consistent top-level performance over three consecutive tournaments. Ozeki is the gateway to yokozuna and demands sustained excellence.
Sekiwake and Komusubi
Known collectively as “sanyaku” (the three titled ranks below yokozuna and ozeki), these positions shift based on each tournament’s results. Holding a sanyaku rank is itself a mark of elite status.
Maegashira
The rank-and-file of the top division (makuuchi). Upper maegashira wrestlers face yokozuna and ozeki, and a “kinboshi” (gold star) — awarded when a maegashira wrestler defeats a yokozuna — is one of sumo’s most thrilling moments.
Juryo and Below
Juryo is the lowest “sekitori” (fully professional) rank, where wrestlers first receive a salary, personal attendants, and other privileges. Below juryo, the divisions descend through makushita, sandanme, jonidan, and jonokuchi. Life below juryo is austere: wrestlers sleep communally, serve senior wrestlers, and train relentlessly for the chance to rise.
Sumo Equipment and Rituals
Mawashi (Belt)
The loincloth-like belt is a wrestler’s only “equipment.” Top-division wrestlers wear silk mawashi for bouts and elaborately embroidered “kesho-mawashi” for the ring-entering ceremony — the latter are works of art often sponsored by supporters.
The Dohyo and Salt-Throwing
The dohyo is a platform of packed clay with a circle 4.55 meters in diameter marked by straw bales. Wrestlers throw handfuls of salt before each bout to purify the ring — a practice rooted in Shinto. Top-division wrestlers are said to use roughly 45 kg of salt per tournament.
Shiko and Sonkyo
The dramatic leg-stomping known as “shiko” is a ritual to drive evil from the earth. “Sonkyo” — squatting face-to-face at the center of the ring before a bout — embodies sumo’s ethos of beginning and ending with respect.
Where to Watch Sumo
Grand Sumo Tournaments
Six 15-day tournaments are held annually. January, May, and September take place at the Ryogoku Kokugikan in Tokyo; March in Osaka; July in Nagoya; November in Fukuoka. Tickets range from masu-seki (box seats for four on tatami) to chair seats. Same-day tickets are sometimes available for early-morning arrivals.
Morning Practice (Asa-geiko)
Many sumo stables allow visitors to observe early-morning training sessions. Watching wrestlers slam into each other during butsukari-geiko, up close and unfiltered, is an unforgettable experience. Availability varies by stable, so advance inquiry is essential.
Sumo Museum
Adjacent to the Ryogoku Kokugikan, the Sumo Museum displays historical banzuke rankings, kesho-mawashi, and photos of past yokozuna. Free entry is included with a tournament ticket during honbasho; the museum is also open to the public at other times.
Summary
Sumo is a combat sport that mirrors the arc of Japanese history — from mythological contests of the gods, through imperial court ceremonies and Edo-period popular entertainment, to its status as a modern national sport. The clash of strength and technique on the dohyo, the Shinto spirituality of salt and shiko, the rigid hierarchy from jonokuchi to yokozuna — sumo distills many facets of Japanese culture into a single ring. Watching a tournament at Ryogoku Kokugikan or visiting a stable for morning practice is the most direct way to feel the weight and excitement of this 1,500-year tradition.
