Castilla will square off against Cartagena in their first play-off clash for promotion to Segunda División. The madridistas will face the first leg at the Alfredo Di Stéfano on 25 May (6pm CET), before the return clash at the Cartagonova on 1 or 2 June. Should the Whites get through the tie, they would contest the second round, the first leg of which will be on 8 or 9 June, whilst the return matches would be contested on the 15th or 16th. In order to secure promotion, the team would have to also get past a third round, which will take place in the last fortnight of June.