Barcelona coach Xavi blasted his players after their 1-0 win at Real Sociedad.
Ronald Araujo's 93rd minute earned the points for Barca.
Xavi later said: "It tastes spectacular, it's clear. We haven't been good, we've suffered. The ball didn't last long for us. They put more intensity, high pressure... in the second half we were better.
"At home, Real pushes, presses ... football is sometimes inexplicable. Last week we deserved the victory and we lost, and today, you win. Maybe the victory means a change of luck.
"We didn't come out well in the match. We have to be self-critical. Last week we played very well. Today we haven't been good, that's not the way. But you play against a great team... their intensity has not been ours. The first 25 minutes are unacceptable. You don't expect victory.
"I think the result of the Clasicoc has affected us, we didn't deserve this win."