1983–84 S.L. Benfica season left the club in second, a point shy of the leader Porto, their next opponent. In the Clássico, Benfica beat his rival Porto and assumed first place. Later in the month, Benfica defeated Olympiacos in the second round of the European Cup, qualifying for the quarter-final. In November and December, Benfica won all their league matches, but lost the Supertaça Cândido de Oliveira to Porto. Benfica kept on winning in the Primeira Divisão in January, lapping the first part of league with a three-point lead. However they suffered a set-back in the Taça de Portugal, losing 2–1 in Estádio de
1974–75 S.L. Benfica season home, and Porto lost again, which increased Benfica's advantage to three-points, 31 to 28. However, a draw with Académica de Coimbra on 2 February, cut that lead to two points. In mid February, Benfica visited Estádio das Antas for the Clássico, defeating Porto by 3–0. Benfica had now a three-point lead over Sporting, who overtook Porto for second place. The team continued on their winning run, and on match-day 25, they added two more points in their difference over Sporting, which had lost in Bessa. However, Benfica would experienced a troubled third week of March. First they were knocked-out of