Barcelona seeks to arrest shock slump

Barcelona hosts Valencia on Sunday desperately in need of a win to arrest a slide of three defeats in four games and prevent losing its grip on the La Liga title race.

The Catalans still lead Atletico Madrid by three points with six games remaining, but were dumped out of the Champions League by Atletico on Wednesday as their quest to deliver a second consecutive treble was killed off.

"It is clear we are not in our best moment of the season," said Barca defender Gerard Pique.