Luis Suarez is still waiting for his first win in a Barcelona shirt.
Barca were beaten at home by Celta Vigo .Joaquin Larrivey scored the only goal of the game off a neat little backheel from Nolito.
The fact that both Atletico Madrid and Real Madrid won their games means that Barca drop to third in the standings.
Atlético Madrid are now second after beating Cordoba at home with a brace from Antoine Griezmann and goals from Mario Mandzukic and Raul García.
Real Madrid take pole position with James Rodríguez scoring twice, including a stunning volley, in a 4-0 win at Granada.