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
2003–04 S.L. Benfica season his presentation, he confessed that the club's limited finances would make it harder to sign players; he also said that Benfica would give their best but did not expect to dethrone Porto. Benfica inquired after Helton, and Ricardo to compete with José Moreira for the goalkeeper position. Over the course of two weeks, the club negotiated unsuccessfully with the latter and ultimately chose to stay with Moreira. The club also looked into strengthen their options at centre and at left-back, negotiating unsuccessfully with Ânderson Polga, Atouba and Júnior. Despite these failed negotiations, Benfica added Luisão, and re-signed Geovanni; both would