Sumo wrestling is one of Japan's oldest and most fascinating sports, combining powerful athletic competition with centuries‑old traditions and rituals. At 1xBet you can also bet on great competitions of this sport too. Although it may look simple to the casual observer, sumo has clear rules and structures that govern how matches are fought and won inside the ring, or dohyō. A sumo bout takes place in a circular clay ring called the dohyō, which is about 4.55 meters (15 feet) in diameter and elevated above the arena floor.