Sergi Roberto's presence on the field helped Barcelona considerably in what was one of their best matches since the break, and perhaps all season.
The player was considerably more precise in his interventions. Of the 85 passes he made during the game only one did not reach its destination.
Proof of this is the first goal. Sergi Roberto was the one who led the ball to the front of the box before giving it to Jordi Alba on the left to cross, before Pau Torres scored an own goal as he was trying to avoid Griezmann's shot.
The Frenchman, another of Barça's standout players on Sunday, was the second most accurate player in the team with 45 of the 46 passes.
Sergi Roberto was the dynamism that prevented an a priori physical midfielder (he was accompanied at the start by Arturo Vidal and Sergio Busquets) from running Quique Setién's team aground again in the construction of the attacking game.