S.L. Benfica 2015, Benfica reported to have 246,401 members; however, after a scheduled renumbering by the club in August 2015, the number decreased to 156,916. In April 2017, Benfica reported they had a total of 184,264 members by 31 December 2016. Benfica has rivalries with Sporting CP and FC Porto, with whom it forms the "Big Three": Portugal's most decorated clubs. None of them have been relegated from the Portuguese league since its establishment in 1934. As Lisbon-based clubs, Benfica and Sporting have shared a rivalry for over a century; it all started in 1907 when eight prominent Benfica players defected to
2004–05 S.L. Benfica season scored in the 13th minute. When asked why Anderlecht had more goal opportunities than Benfica, Trapattoni said, "Do you know international football? It is very balanced nowadays. I wish we had more chances but our opponent was stronger." Following the win, Benfica were due to meet Porto in the Supercup on 20 August. Ricardo Quaresma of Porto scored the only goal of the game in an individual effort. It was Benfica's tenth consecutive loss in the competition; the previous win occurred in 1989. Four days later, Benfica travelled to Belgium to play Anderlecht. The home team scored first by Aruna