1980–81 S.L. Benfica season with four more wins, including a home win against Porto, which widened their difference to four points. Meanwhile, in Europe, Benfica defeated Fortuna Düsseldorf in quarter-finals but was knocked-out by Carl Zeiss Jena in the semis. The final two months of the Primeira Divisão saw Benfica drop points with Académico de Viseu, Vitória de Guimarães and Sporting, reducing their lead to two points. On match-day 29, a home win against Setúbal secured their 24th league title. They concluded the season by winning their 17th Taça de Portugal in a 3–1 win against Porto. In the previous season, Mário Wilson failed
1979–80 S.L. Benfica season with Vitória de Setúbal on 20 January, losing a point in the race. Two weeks later, in the visit to Estádio das Antas to face Porto, Benfica lost 2–1 and opened a four-point deficit, which Wilson admitted: "is a disadvantage difficult to overcome". But February had also scheduled a Portuguese Cup match against Sporting for the round of 16, which Benfica won by 2–1. Back on the league, despite dropping points with Vitória de Guimarães in early March, Benfica kept the chase to the front two, but could not cut the distance to them, which remained at four points. On