Real Sociedad coach Imanol Alguacil insists they didn't deserve their 4-0 Copa del Rey quarterfinal defeat to Real Betis.

Betis won 4-0 in San Sebastian last night.

Imanol said: "It's clear. Everyone has seen it and from what they have taught me someone must explain what has happened on the field. Things have happened outside that have not helped us at all and have made a difference.

"I do not understand why they have not given (Adnan) Januzaj's goal as valid, I think that in their second goal (Alexander) Isak wasn't offsid. There are situations that mark games that are so close even though we haven't had our best match.

"I went into the locker room, I told them the truth and I congratulated them despite the beating they received. It wasn't our best game but today... in a game so balanced, the details are very important."