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
1996–97 S.L. Benfica season while the results in Europe were looking accordingly. In late October, Benfica visited Sporting for the Derby de Lisboa, losing one-nil and dropping down one position. A week later, with a further two more points dropped, Porto opened a three-point gap at the front. By the time the Clássico arrived, the distance was already five points. Losing 1–2 to Porto, increased it to eight. Affected by the defeat, Benfica lost for a second time on a row, with the priority changing from battling Porto in the title race, to defending the second place from Sporting. Autuori was sacked immediately, and