Sumo is an individual competition, but it is also a group battle.
All sumo wrestlers belong to a group called “Sumo-beya（相撲部屋）”. There are currently 45 sumo-beya, each of various sizes. Wrestlers belonging to the same sumo-beya do not confront each other at the tournament.
Therefore, the wrestlers in the sumo-beya to which the Yokozuna belongs will be more advantageous than the wrestlers in the sumo-beya without the Yokozuna.
