division. 1990 Campeonato Brasileiro Série A First division: 20 teams 1st phase: 2 groups of 10 teams. Classical split round-robin. Winners of each stage group qualified together with top 4 remaining overall stage record. Bottom 2 overall stage record relegated to second division. Final phase: 8-team play-offs. Second division: 24 teams 1st phase: 4 groups of 6, double round-robin. Top 4 qualified. Bottom 4 relegated to third division. 2nd phase: 4 groups of 4. Double round-robin. Top 2 qualified. 3rd phase: 2 groups of 4. Double round robin. Final phase: Double play-offs with home advantage to better season record. Finalists promoted to 1991 first division. Third division: 30 teams 1st phase: 6 groups of 5, single round robin. Top 1 qualified, plus top 2 runners-up across groups. Final phase: 8-team play-offs. Top 4 (semi-finalists) promoted to second division. 1991–2000 1991 Campeonato Brasileiro Série A This championship adopted a simplified formula with a single 20-team single round-robin season, with random home and way fixtures. Top 4 teams qualified for play-offs (1st vs 4 th, 2nd vs 3rd) with tie-break given to better season record. Bottom 2 overall stage record relegated to second division (Grêmio happened to be the first Clube dos 13 team to be relegated ever, with consequences for the next tournament again). Second division featured 64 teams with 16-team play-offs. Top 2 promoted to 1992 first division 1992 Campeonato Brasileiro Série A Similar to 1991 with a single 20-team single round-robin season, with random home and way fixtures. Top 8 teams qualified for 2 double round-robin groups (of 4 each). Top of each group met in final play-offs. Bottom 2 overall stage record relegated to second division. Second division featured 64 teams with 16-team play-offs. Top 2 promoted to 1992 first division 1993 Campeonato Brasileiro Série A 1993, after two relatively calm schedulings, saw the return of Clube dos 13 politics. As Grêmio had been relegated in 1991, which was relatively Ok, but morevorer failed to be promoted as widely expected, in a similar manner to catastrophic 1987, this was not Ok so two divisions of 2 groups each created. In some manner this was still more arbitrary than 1987, as in practice the two divisions indeed constituted a new first and second division. Teams from division A (16, including all Clube dos 13) could not be relegated (hence Grêmio, 11th of 1992 second division). Teams from division B