1973–74 S.L. Benfica season go. Four days later, Carnation Revolution occurred, bringing the country back to democracy. In May, in the last three matches with both teams separated by a point, Sporting won the title on 20 May after defeating Barreirense, while Benfica drew with Setúbal. Benfica finished with two points less, 47 to 49. On 2 June, Benfica secured their presence in the Taça de Portugal Final after a 3–0 win against Porto on Estádio das Antas. Seven days later, Benfica met Sporting in the Final. A goal from Nené gave Benfica the lead which lasted until the 88th minute, when Sporting levelled.
1970–71 S.L. Benfica season put Sporting and Benfica level on points. Benfica closed March with an away win over Leixões, with Porto losing and dropping out of race. This left Benfica and Sporting with a three–point lead and three match-days to go. On 4 April, Benfica beat Vitória de Setúbal at home and for the first time headed the league isolated, with a two-point lead. Sporting had lost with Porto. Three weeks later, Benfica confirmed their league title with an away win over Varzim. It was their 18th league title. They finished the Primeira Divisão with a 5–1 victory over Académica, ending the campaign