 The first edition was played in the state of Rio Grande do Sul, contested by 30 clubs – the 20 clubs currently playing in the Campeonato Brasileiro plus 10 qualified from the federation's national ranking.Since 2007, only clubs participating in the same season's Série A are invited to participate in the Sub-20, unless one of the invited teams decide not to participate.In this case it is replaced by an invited team who is not competing in the Série A.