The Basque club did not give the fifth line in the standings.
Real Sociedad hosted Valladolid in the match of the 37th round of La Liga.
Alguazil's team in the first half of the meeting brought the score to a devastating one thanks to Isak's double and goals from Silva and Januzaj.
Valladolid scored a prestige goal in the 82nd minute: Andre Marcos struck Remiro's goal.
Real Sociedad - Valladolid 4: 1 Goals: Isac, 6, 16, Silva D, 28, Januzaj, 35 (penalty) - Andre Marcos, 82 Real Sociedad: Remiro - Garzabel, Elustondo, Le Norman, Montreal (Saldua, 67).