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 from three losses and a draw before December. In Europe, the situation was similar; Benfica never recovered a five-point deficit to Celtic by day three, ending with seven points and demotion to the UEFA Cup. From December until April, Benfica regained lost ground in the Primeira Liga, climbing to second place—a point away from Porto, which was also advancing until the quarter-finals of UEFA Cup In April, Benfica had the opportunity to reach the league's top place if they won the Clássico with Porto; however, they only managed a 1–1 draw. It was the first of five winless games that