Real Murcia, Cordoba, Sporting Gijon and Las Palmas will battle for the right to join Eibar and Deportivo La Coruna in La Liga next season.
Prior to the final round of fixtures, Eibar and Deportivo had already booked their spots in Spain's top flight for the 2014-15 campaign.
However, the final position from the Segunda will go to either Murcia, Cordoba, Sporting or Las Palmas.
The first leg of the playoff semi-finals will take place on Wednesday, with Cordoba hosting Murcia and Sporting making the trip to Las Palmas.
The return fixtures will take place on Sunday, before the first leg of the final takes place on June 19 and the second leg on June 22.
