1980–81 S.L. Benfica season the club. Benfica's league campaign started with seven consecutive wins, before a first loss with Porto in the Clássico. A few days later, Benfica wins their first Supertaça de Portugal. In the Cup Winners' Cup, Benfica eliminated Altay, Dinamo Zagreb and Malmö in the first three rounds. In late November, Benfica draws with Sporting and three weeks later, with Vitória de Setúbal, lapping the first half in first place with a three-point lead. In the following weeks, Benfica won three more matches before losing another point in a draw with Penafiel, which cut his lead to two points. They reacted
1978–79 S.L. Benfica season handed the title to Porto, who gained a point with one match left. A week later, Benfica won, but so did Porto, who confirmed their back-to-back league title with 50 points, one more than Benfica. About the season, Mortimore said: "What a beautiful championship, with an appealing fight between Benfica and Porto. They (Porto) ended up being Champions because in the matches against us, they racked-up three points. But that was not the reason why he lost it. It was the poor results with Belenenses, Setúbal and Marítimo.". Two seasons without any honour was not seen since 1948, and two