Real Sociedad stunned Barcelona, 3-1, in San Sebastian on Saturday and might have scored four or five but for a handful of misses from striker Carlos Vela.
But Antoine Griezmann and David Zurutuza both found the back of the net in the second half for the Basque outfit, who had also benefited from an Alex Song own goal in the opening frame before Lionel Messi’s temporary equaliser.
Following are player ratings and analysis for all the Barcelona players.
Half-Time analysis for Barcelona
Valdes: Had a save to make on Vela but didn't stand a chance on the goal.
Montoya: Delivered a lovely ball to Messi for the equaliser.
Bartra: Distribution has been excellent, but his understanding with Pique has not.
Pique: Quite nearly gifted Vela a goal after conceding possession in the goalmouth.
Adriano: At this point, he is Barcelona’s co-No. 1 left-back alongside Jordi Alba.
Song: Could well be charged with an own goal after deflecting the Sociedad opener past Valdes.
Busquets: One of the poorest periods he’s played all season.
Iniesta: Had only 47 touches in the first half.
Pedro: Struggles to involve himself when Neymar is in the team.
Messi: Playing quite deep, but did well to both set up and then finish the goal in the 36th minute.
Neymar: Caused a few gasps when he went to ground in the early moments.
Full-Time analysis for Barcelona
Valdes: Looked generally shaky and stopped just one of the four shots that Sociedad put on target.
Montoya: Jose Angel and Bergara kept a close eye on him in the second half.
Bartra: Was caught out of position on both of Sociedad’s goals in the second period.
Pique: One of his worst displays of the season.
Adriano: Found Zaldua to be a handful and didn't offer the width his teammates had come to expect.
Song: Withdrawn in favour of Fabregas following a forgettable night.
Busquets: Touched the ball only 59 times and didn't look interested.
Iniesta: Barcelona’s best distributor of the ball, although he didn't create a single scoring opportunity worth mentioning.
Pedro: Made next to nothing happen over the 90 minutes.
Messi: He scored in the first half but had fewer than 50 touches, which is nothing short of shocking.
Neymar: Showed the odd spark but was generally as ineffective as the rest of his teammates.
Fabregas: Might have picked out Neymar for a goal had Mikel not done well to head the ball away.
Sanchez: Played 17 minutes but had just 11 touches of the ball.