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
2005–06 S.L. Benfica season for Benfica in the 20th minute, but Tiago Targino equalized a few minutes later. Simão put Benfica back in front with a deflected shot that beat Márcio Paiva, ensuring a third consecutive win that reduced the distance to the league leader to four points. After another interruption for international football, Benfica returned to competition with a Clássico against Porto. Despite Porto being the favourite to win, Benfica won 2–0 with two goals from Nuno Gomes. It was Benfica's first away win at Porto since 1990–91, when César Brito also scored a double. On the following Thursday, Benfica visited El Madrigal