Round-robin tournament - Wikipedia
https://en.wikipedia.org/wiki/Round-robin_tournamentThe champion in a round-robin tournament is the contestant that wins the most games, except when draws are possible. In theory, a round-robin tournament is the fairest way to determine the champion from among a known and fixed number of contestants. Each contestant, whether player or team, has equal chances against all other opponents because there is no prior seeding of contestants that will pr…