Barcelona slumped to their fourth defeat in six games as Radamel Falcao’s goal gave Rayo Vallecano a 1-0 win to pile more pressure on Ronald Koeman.
Koeman’s side are ninth in La Liga having only won four of their 10 games, and went down to former Manchester United and Chelsea striker Falcao’s first-half goal in Madrid.
Memphis Depay also missed a penalty for Barcelona in the 72nd minute to compound Koeman’s misery.
Colombian striker Falcao pounced in the 30th minute after Barca captain Sergio Busquets lost the ball in midfield and allowed Rayo to launch a quick counter-attack that led to the goal.
After dribbling past Gerard Pique, Falcao finished off in style by finding the back of the net.
Barca had a great chance to equalise in the second half but Rayo goalkeeper Stole Dimitrievski saved Depay’s penalty.
The result preserved Rayo’s unbeaten league run at home this season as they have now won all five of their matches at the Estadio de Vallecas. They are fifth in LaLiga with 19 points from 11 games.
Following Sunday’s 2-1 defeat by Real Madrid in El Clasico, footage posted on social media showed Koeman’s car being surrounded by fans as he drove away from the Nou Camp.
In response, Barcelona posted a statement on their official Twitter account which read: “Barcelona publicly condemn the violent and disdainful acts that our manager experienced when leaving the Nou Camp.
“The club will take security and disciplinary measures so that such unfortunate events do not happen again.”
October 30: Alaves (H) – La Liga, 8pm
November 2: Dynamo Kiev (A) – Champions League, 8pm
November 6: Celta Vigo (A) – La Liga, 3.15pm
November 20: Espanyol (H) – La Liga, 8pm
November 23: Benfica (H) – Champions League, 8pm
November 28: Villarreal (A) – La Liga, TBD