1977–78 S.L. Benfica season by Porto. The decisive Clássico in May, Porto secured a 1–1 draw after trailing most of the game, putting them on the course to win the league. Two weeks later, an unbeaten Benfica came second to Porto due to a 15 goal-average deficit. Benfica started the new season as three time Champion for the second time in the decade. In the transfer window, Benfica brought back Humberto Coelho and others like Celso Pita. Departing players included Nelinho, Artur Correia and Carlos Alhinho. One of biggest sagas of the transfer window was the return of Rui Jordão to Portugal, which Benfica
1988–89 S.L. Benfica season Their next match was a Clássico with second-place Porto, ending in a draw. Until Christmas, Benfica increased their lead to four points. However, they lost for the first time in the next match, with Boavista, followed by a second consecutive loss with Penafiel, which did cause them to lose their first place because Porto also lost. In the following weeks, Benfica racked up wins and increased their lead to six points by March. The Clássico on the 29th match-day helped define the course of the remainder of the season. It was Porto's last hope of closing the gap, but Benfica