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
1983–84 S.L. Benfica season Football Federation, that joined the Primeira Divisão and La Liga Champions in a two-legged Super cup. Benfica first visited the San Mamés Stadium on the 17, losing 2–1. A week later, they received Bilbao at home and won by 3–1, thus keeping the trophy. Between that, Benfica played the Portuguese Cup Final with Porto, winning one-nil with a goal from Carlos Manuel. The league campaign started in the best of terms, with four consecutive wins, while in the European Cup, Benfica eliminated Linfield in the first round. In October, they dropped the first points, in a draw with Braga, which