S.L. Benfica S.L. Benfica Sport Lisboa e Benfica (), commonly known as Benfica, is a sports club based in Lisbon, Portugal. It is best known for the professional football team playing in the Primeira Liga, the top flight of the Portuguese football league system, where they are the most successful club in terms of titles won. Founded on 28 February 1904 as "Sport Lisboa", Benfica is one of the "Big Three" clubs in Portugal that have never been relegated from the Primeira Liga, along with rivals Sporting CP and FC Porto. The Benfica team is nicknamed "Águias" (Eagles), for the symbol atop
FC Porto in international football competitions losing the 1964 Portuguese Cup final against champions Benfica. Porto progressed from the first round of a European competition for the first time, after a 4–0 aggregate victory over French Cup winners Lyon, but fell in the next round to 1860 Munich.<ref name="1964/65"></ref> At the end of that season, Porto finished runners-up to Benfica in the league and qualified for the following season's Fairs Cup. The club's performance was similar to that of the previous campaign: a first-round elimination of a French team (Stade Français) followed by a second-round loss to a German team (Hannover 96),<ref name="1965/66"></ref> which included a