Deportivo La Coruna clinched promotion to LaLiga on Sunday with a 2-0 win at Valladolid, returning after eight seasons outside of Spain's top flight.
Cameroonian striker Bil Nsongo hit a brace to take the Galician side up from the second division with a match to spare.
Already promoted are leaders Racing Santander, who drew 1-1 at Malaga and hold a two-point advantage on Antonio Hidalgo's second-placed Depor before the final round of fixtures.
In 2004 Depor, featuring Juan Carlos Valeron and Diego Tristan, reached the Champions League semifinals, where they were beaten by Jose Mourinho's Porto.