Real Sociedad coach Imanol Alguacil was left delighted with their 1-0 win at Celta Vigo.
Brais Mendez struck early for the 1-0 win.
Imanol later said: "It is a triumph of great merit, against a great team and a great coach.
"I chose the best eleven, due to fatigue and injuries, like eight youth players and because of how we have won, with courage and daring, although more than one has surely called me crazy and said where was this is going?
" We pressed well and I am very happy that we caused the rival to modify their way of defending, because they were not able to get a hand on us.
"Cheap Brais? Very cheap, there is no money to pay for his level as a footballer and person. I imagine that Brais's level does not surprise you, but since he arrived he has adapted very well, I had no doubt, but he is also a beautiful person and there is no money to pay for his quality and level of player and person."