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
2008–09 S.L. Benfica season the game between Porto and Sporting, Benfica finished February with 40 points, two fewer than Porto. March was less busy than February, with only three matches. Benfica's first was at the Municipal José Bento Pessoa against Naval. The club took the lead with a third-minute goal from Aimar. Naval evened the score at the start of the second half with a goal by Marcelinho, but Katsouranis scored Benfica's second goal. Miguel Vítor, who assisted the goal, told the media that Benfica wanted to keep winning in case Porto slipped. On 14 March, the club hosted Vitória de Guimarães in their