FC Porto the 1955–56 Primeira Divisão on head-to-head advantage over runners-up Benfica. Later that season, Porto beat Torreense to win its first Taça de Portugal and achieve its first double. As the Portuguese league winner, Porto made its debut in European competitions by qualifying for the 1956–57 European Cup. The club's first participation was short-lived, ending in the preliminary round with two defeats against Spanish champions Athletic Bilbao. A year later, Porto lifted its second Taça de Portugal by beating Benfica 1–0 in the final. The two clubs met again in the following season's final, but this time Benfica took the trophy
2006–07 S.L. Benfica season Benfica hosted Austria Wien for the second leg. The opening goal came from Rui Costa, with further Benfica goals scored by Nuno Gomes and Petit. Benfica had joined their rivals Porto and Sporting in the 2006–07 Champions League, marking the first time three Portuguese teams were present in the group stage. On 24 August, Benfica took part in the Champions League draw; they were drawn with Manchester United, Celtic and F.C. Copenhagen. It was second time in a row Benfica played with Manchester United in the group stage after eliminating them in 2005–06. Three days later, Benfica were due to