EntityQ1756477· pop 15· linked from 523 articlesleague systemSign in to savehierarchy of leagues in a sportConnectionsarena footballEntityassociation footballEntitybasketballEntitytennisEntitybaseballEntityhandballEntityUnion of European Football AssociationsEntityice hockeyEntitydigital object identifierEntitysumoEntitywater poloEntityAsian Football ConfederationEntityCONMEBOLEntityQ1215892EntityNational Football LeagueConceptCONCACAFEntityConfederation of African FootballEntityhierarchyEntityDavis CupEntityrugby unionEntityCategoriesSports league systemsTournament systems