The Primeira Liga (; English: Premier League, also written as Liga Portugal 1), also known as Liga Portugal Bwin for sponsorship reasons, is the top level of the Portuguese football league system. Organised and supervised by the Liga Portugal, it is contested by 18 teams since the 2014–15 season, with the three lowest-placed teams relegated to the Liga Portugal 2 and replaced by the top-three non-reserve teams from this division. Founded in 1934 as Campeonato da Liga da Primeira Divisão, it was named Campeonato Nacional da Primeira Divisão from 1938 until 1999, when it was changed to its current naming. Over 70 teams have competed in the Primeira Liga, but only five have been crowned champions. Among them, the "Big Three" teams – Benfica (38 wins), Porto (30) and Sporting CP (19) – have won all but two Primeira Liga titles; the other winners are Belenenses (1945–46) and Boavista (2000–01). More information...

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