Among them, the "Big Three" teams – Benfica (38 wins), Porto (30) and Sporting CP (20) – have won all but two Primeira Liga titles; the other winners are Belenenses (1945–46) and Boavista (2000–01).

[citation needed] Then, with the reform, a round-robin basis competition was implemented as the most important of the calendar and began defining the Portuguese champion.

[4] Porto won the inaugural edition of the new league championship and successfully defended the title in the next season.

[6] Porto finished the regional championship in third place again, which did not grant entry into the Primeira Liga.

[citation needed] "The Big Three" (Portuguese: Os Três Grandes) is a nickname for the three most powerful sports clubs in Portugal.

With the exception of Belenenses in 1945–46 and Boavista in 2000–01, only three clubs have won the Primeira Liga title – Benfica (38 times), Porto (30) and Sporting CP (20).

In other sports, the rivalry between the big clubs is also considerable and it usually leads to arguments between the fans and players.

[10][11] Galp Energia acquired the naming rights to the league in 2002, titling the division SuperLiga GalpEnergia.

A four-year deal with the Austrian sports betting bwin was announced on 18 August 2005 amid questioning by the other gambling authorities in Portugal (the Santa Casa da Misericórdia and the Portuguese Casinos Association), who claimed to hold the exclusive rights to legal gambling games in Portuguese national territory.

The third placed team enters the playoffs for the group stage of the UEFA Champions League; if they fail to qualify, they enter the UEFA Europa League, along with the fourth placed team and the Taça de Portugal cup winners.

[19] The total accumulated audience figures were 3,707,290 and 556,267 people, giving an average attendance of 12,115 and 1,818 spectators in the Primeira and Segunda Liga, respectively.

[20] This is due to the League's joint initiative with Continente “É Para Cartão” to bring families back to the stadiums.

[22] The 2023–24 season saw the following average attendance by club:[23] All Primeira Liga champions have come from either Lisbon or Porto.