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
1972–73 S.L. Benfica season from Eusébio. With the win, Benfica opened a two-point lead over their rivals. They continued on their winning run, beating Belenenses at home by 5–0 on match-day 7. With seven wins in seven matches, their lead was now three points. Back on the European stage, Benfica visited Baseball Ground to face Derby County on 25 October. Three first-half goals from Derby County surprised Benfica, who failed to react and lost 3–0. Before the second leg, Benfica played the Clássico with Porto for the Primeira Divisão. Porto scored first and was winning by 2–0 until the 78th minute, when Benfica scored