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
2006–07 S.L. Benfica season from three losses and a draw before December. In Europe, the situation was similar; Benfica never recovered a five-point deficit to Celtic by day three, ending with seven points and demotion to the UEFA Cup. From December until April, Benfica regained lost ground in the Primeira Liga, climbing to second place—a point away from Porto, which was also advancing until the quarter-finals of UEFA Cup In April, Benfica had the opportunity to reach the league's top place if they won the Clássico with Porto; however, they only managed a 1–1 draw. It was the first of five winless games that