基本  Sumo Basics

A sumo bout lasts seconds and explains nothing about itself. These pages give you the rules, the ring, and the shape of a tournament — enough to follow any bout you see.

Read in this order

1. How Sumo Works: A First-Time Viewer's Guide Six things, on one page. Start here if you have never watched a bout.
2. How a Sumo Match Is Won — and the Two Ways to Lose Two rules end almost every bout. Three moments confuse everyone at first.
3. The Dohyo: Every Line and Bale Explained Four bales are set back on purpose. The reason is drainage.
4. What Happens in the Four Minutes Before a Bout Salt, staring, false starts — the build-up is longer than the fight.
5. What Is a Basho? The 15-Day Tournament Format One bout a day, fifteen days, and a line at eight wins.
6. Why Sumo Has No Weight Classes A much lighter man beating a much heavier one is an ordinary result.
7. Kachikoshi and Makekoshi: Why the Eighth Win Matters One man wins the championship. Everyone else is playing for this line.
8. Why Sumo Bouts Last Only Seconds Three rules, each of which shortens a bout. Together they make a long one rare.

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