Although the tournament already started, there is still a lot of action to keep up with in this tournament being held in Tokyo right now. It ends on September 23, so catch up on your sumo rules and then head over to the tournament page for rankings and match results. Likewise, for those in Tokyo this week, you can buy tickets to watch the September Grand Tournament.

Sumo is a Japanese style of wrestling and Japan's national sport. It originated in ancient times as a performance to entertain the Shinto gods. Many rituals with religious background are still followed today.

The basic rules of sumo are simple: the wrestler who first touches the ground with anything besides the soles of his feet, or who leaves the ring before his opponent, loses. Fights take place on an elevated ring, called a "dohyo", which is made of clay and covered in a layer of sand. The fights themselves usually last only a few seconds, or in rare cases, about a minute. Continue Learning about Sumo

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