S.L. Benfica B six vacancies available in the Segunda Liga (now LigaPro) for the 2012–13 campaign. Of those seven clubs, six were selected to take part in the competition: Benfica, Braga, Marítimo, Porto, Sporting CP and Vitória de Guimarães. LPFP, who organize the professional football tiers in Portugal, announced that the clubs would have to pay €50,000 to register themselves at the league in order to compete in the upcoming season. In addition, LPFP also required them to follow new rules regarding player selection, in which each B team must have a squad with a minimum of ten players formed at the club's
1984–85 S.L. Benfica season won all league matches in April. In the Supertaça Cândido de Oliveira, a one-nil win for both Benfica and Porto forced a replay of the competition. In early May, John Mortimore was confirmed as new manager, with Csernai still in charge for another month. Before the end of May, Benfica lost away in the first leg of the Supertaça to Porto, but won the Derby de Lisboa with Sporting by 3–1, reducing the distance between them. In June, Benfica lost again in the Supertaça, losing the competition and finished the league in third place, 12 points behind Porto and five