He was one of the most anticipated Barcelona openers in recent memory, but ultimately didn't quite live out the way club officials hoped.

  Barcelona suffered a scoreless draw against Rayo Vallecano at the Nou Camp and needed to secure a point in their La Liga opener.

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After a frenzied summer of economic tug-of-war, this is Barça's 1st chance to show off their signings  in a competitive environment,

And apart from Jules Kunde, they didn't make it in time.  All eyes were on Robert Lewandowski ahead of his  La Liga debut,

But he remained largely anonymous in the first half as the hosts struggled to find their rhythm in attack. Another Barcelona sign,

Rafinha could  have scored a penalty with just under ten minutes to go when he fell behind on the right flank, but he went down under pressure from Frangarcia in the box.

However, it was a light touch and referee Alejandro Hernandez Hernandez refused to intervene. 

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 It seemed to put off the former Leeds man who squandered a number of set pieces and good looking chances. 

He combined well with Osman Dembele, but exchanged a cross with his teammate midway through the first half when Xavi Hernández tried to destabilize Rayo's defense.

Barça had dominant possession but Rayo had their best  first half just before half-time when Alvaro García ran through the left flank,

Cut inside and sent Ronald Araujo in the wrong direction with a deft swing.  He looked like he was going to score, but Marc-André ter Stegen stifled his shot from close range.

Rayo picked up where they  left off in the second half, with Pate Sis winning the ball high in the field and Sergio Camero launching an attack that circled Ter Stegen.

He hesitated in the net at will and attempted a difficult  finish after Stegen crawled across goal, but it came just wide.

Xavi made a triple substitution in the 60th minute, bringing on Frenkie De Jong, Sergi Roberto and Ansu Fati for Gabi, Christensen and Rafinha respectively. 

Barca then became much more aggressive, creating more chances for Lewandowski and tightening the net for their opponents.

Ansu Fati and Sergio Busquets both scored acrobatic saves from Rayo goalkeeper Steele Dimitrievski, but Barça were unable to break the block. 

With just 10 minutes remaining, Xavi called on Pierre-Emerick Aubameyang for the second-half winner.

 It looked to pay off as Lewandowski assisted Aubameyang  shot on goal while Dimitriewski was stuck. 

Unfortunately for Barça, after Alejandro Catena scored a great finish on the goal line, Busquets was sent off in frustration after elbowing his Radamel Falcao in injury time.