Barcelona lost 1-0 to Leganes on Sunday evening, leaving Atletico Madrid level at the top of the table with the Madrid side having a game in hand.
A goal from Gonzalez in the fourth minute inflicted a fourth defeat in 18 weeks on Barcelona, who appear to be going through a tough time in the league.
The Catalans registered 4 shots on goal in tonight's duel, as they wasted numerous scoring opportunities.
In the next duel, Barcelona will face Atletico Madrid, turning the match into a test of whether or not Hansi Flick's team is a rival for the title this season.
(A2 Televizion)