Sport Lisboa e Benfica, commonly known as Benfica, or simply as SLB, is a Portuguese sports club based in Lisbon. The club is best known for its professional football team that plays in the Primeira Liga, where they are the current champions. Founded on 28 February 1904, Benfica is one of the Big Three (Portuguese: Três Grandes) clubs in Portugal, along with its long-standing rivals Sporting CP and Porto, who have never been relegated from the Portuguese league since its establishment in 1934. Benfica is the most supported Portuguese club and it is the European club with the biggest percentage of supporters in its own country (47%).With 235,000 members, Benfica is the second-biggest club in the world, after Bayern Munich.It is the twenty-sixth richest football club in terms of revenue, wi...