1999–2000 S.L. Benfica season "their worst performance of the season, and seeing Porto close in on the top of the table." On 4 November, Benfica hosted P.A.O.K. for the second leg of their European qualifier. They lost 2–1 in normal time, requiring extra time and a penalty shootout to decide the match. The Lisbon side converted all their shots, progressing into the next round. Four days later, the club defeated S.C. Braga by one goal in a league match to open a three-point lead. After a one-week break for the Taça de Portugal, Benfica visited Estádio das Antas for the Clássico against Porto. They
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