Sumo

Sumo is Japan's national sport and one of the oldest martial arts in the world - a ritual combat tradition with roots stretching back over 1,500 years. Two rikishi (wrestlers) face each other in a circular ring (dohyo) with one objective: force the opponent out of the ring or make any part of their body other than the soles of their feet touch the ground. Simple in concept, extraordinarily deep in practice, Sumo is simultaneously a sport, a Shinto ritual, a cultural institution and a window into the soul of Japan.

Ancient Shinto Roots

Sumo's origins are inseparable from Shinto - Japan's indigenous spiritual tradition. The oldest written references appear in the Kojiki (712 AD) and Nihon Shoki (720 AD), describing a mythological wrestling match between gods. Early Sumo was performed as a ritual to pray for good harvests and divine favour - a sacred act, not merely a sport. The dohyo (ring) remains a sacred space to this day, consecrated before each tournament by Shinto ceremony.

Imperial court Sumo (Sumai no Sechie) was formalised in the Nara period (710-794 AD) as an annual ritual before the Emperor. Warriors from across Japan competed, and the strongest were incorporated into the imperial guard. From this aristocratic tradition, Sumo gradually became a public spectacle during the Edo period (1603-1868), when professional Sumo stables (heya) formed and the six-tournament annual schedule took shape.

The Professional System

Professional Sumo operates through a strict hierarchical division system. Wrestlers live and train in stables (heya) under a master (oyakata), following rigid daily routines and traditional customs. The six divisions, from lowest to highest, are: Jonokuchi, Jonidan, Sandanme, Makushita, Juryo and Makuuchi. Only the top Makuuchi division is broadcast nationally and internationally.

Within Makuuchi, ranks ascend through Maegashira, Komusubi, Sekiwake, Ozeki and finally Yokozuna - the Grand Champion. The Yokozuna rank is unique in sport: once achieved, it cannot be taken away, but a Yokozuna is expected to retire if their performance no longer matches the rank's dignity. There have been only 73 Yokozuna in the sport's entire history.

The Mongolian Dominance and Hakuho

From the early 2000s, Mongolian wrestlers transformed professional Sumo. Asashoryu, Hakuho, Harumafuji, Kakuryu and others brought an athleticism and competitive ferocity that reshaped the sport. Hakuho in particular stands apart as the greatest Sumo wrestler of all time - 45 tournament championships, records that may never be broken, and a dominance sustained for nearly 20 years. His career is the defining chapter of modern Sumo history.

Life and Training in Sumo

Professional Sumo training is unlike any other combat sport. Wrestlers wake at 4-5am for morning practice (keiko), which begins immediately without breakfast - training on an empty stomach is traditional. Keiko consists of shiko (leg stomping to build hip strength), teppo (striking a wooden post to develop pushing power), butsukari-geiko (charging practice), and live bouts called moshi-ai.

After training, wrestlers eat chankonabe - a protein-rich hot pot stew that is Sumo's traditional meal - and sleep to gain weight. The combination of extreme training and strategic weight gain produces the characteristic physique of a Sumo wrestler: massive and powerful but athletically capable of explosive movement.

The 82 recognised winning techniques (kimarite) range from simple pushouts (oshidashi) and throws (uwatenage) to rare techniques like the ipponzeoi (one-armed shoulder throw) seen only a handful of times per generation. Mastering the basic pushing, pulling and throwing arsenal while reading an opponent's reactions in split seconds is a lifetime's work.

Sumo Equipment

Mawashi: The thick silk or cotton loincloth worn by Sumo wrestlers. In competition, silk mawashi of specified colours are worn. Training mawashi are cotton. Gripping the opponent's mawashi is a central tactical element of Sumo - belt techniques (yotsu-zumo) are among the sport's most sophisticated.

Dohyo: The ring itself - 4.55 metres in diameter, built from a clay base covered in sand and marked by a twisted rice straw rope (tawara) boundary. Professional dohyo are built and consecrated fresh for each tournament.

Kesho-mawashi: The ornate ceremonial apron worn by Makuuchi and Juryo wrestlers during the pre-tournament ring-entering ceremony (dohyo-iri). These are elaborate silk garments often gifted by sponsors and worth hundreds of thousands of yen.