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
1985–86 S.L. Benfica season a trio composed of Carlos Manuel, Diamantino Miranda and José Luís from leaving. In the league, Benfica started in erratic shape but quickly settled and racked up several consecutive wins. They ended 1985 in first place and having the Supertaça Cândido de Oliveira, their second Supertaça. In the first months of new year, Benfica kept their first place, while knocking out Porto and Sporting from the Portuguese Cup. In April, the season took a dramatic turn when Benfica lost at home to Sporting and were matched in first place by Porto, who confirmed their title a week later. Nonetheless, Benfica