The 2021 Campeonato Paulista de Futebol Profissional da Primeira Divisão - Série A1 was the 120th season of São Paulo's top professional football league. The competition was played from 28 February to 23 May 2021.[1]
In the first stage the sixteen teams are drawn, with seeding, into four groups of four teams each, with each team playing once against the twelve clubs from the other three groups. After each team has played twelve matches, the top two teams of each group qualify for the quarter-final stage.
After the completion of the first stage, the two clubs with the lowest number of points, regardless of the group, will be relegated to the Campeonato Paulista Série A2.
Quarter-finals, semi-finals and finals are played in a two-legged home and away fixture, with the best placed first stage team playing the second leg at home.
In case of a draw in any knockout stage, the match will be decided by a penalty shoot-out.
The two highest-placed teams not otherwise qualified will qualify for the 2022 Copa do Brasil.
The teams are ranked according to points (3 points for a win, 1 point for a draw, 0 points for a loss). If two or more teams are equal on points on completion of the group matches, the following criteria are applied to determine the rankings:
The Troféu do Interior of the 2021 Campeonato Paulista began on 12 May with the quarter-finals and ended on 20 May 2021 with the final. A total of six teams compete in the Troféu Interior.
The knockout stage of the 2021 Campeonato Paulista began on 11 May with the quarter-finals and end on 23 May 2021 with the final. A total of eight teams compete in the knockout stage.
Round dates[]
Round
First leg
Second leg
Quarter-finals
11–14 May 2021
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Semi-finals
16 May 2021
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Finals
20 May 2021
23 May 2021
Format[]
The quarter-finals will be played in a single match at the stadium of the better-ranked team in the first phase. If no goals were scored during the match, the tie will be decided via a penalty shoot-out. The semi-finals will be played with the same format as the quarter-finals.
The finals will be played over two legs, with the team having the better record in matches from the previous stages hosting the second leg.
Updated to match(es) played on unknown. Source: Soccerway Rules for classification: 1st points; 2nd wins; 3rd goal difference; 4th goals scored; 5th head-to-head results; 6th least red cards received; 7th least yellow cards received; 8th draw. (B) Qualification for the Campeonato Brasileiro Série D; (C) Champion; (R) Relegated; (W) Winner of the Troféu do Interior