"Plus Santi Cazorla plays in Villarreal defeat; Celta draw with Espanyol"
Lionel Messi scored twice - his first Barcelona's 6,000th La Liga goal - to help the prevailing champions get off to a winning begin with a 3-0 win over Alaves.
Barca came nearest to opening the scoring in a first initial 30 minutes, with Luis Suarez, showing up for the club,firing just over the crossbar.
Messi, who additionally scored the club's 5,000th class goal in 2009, let go a free-kick against the bar following 38 minutes however the game stayed goalless at the break.
Philippe Coutinho went ahead for Nelson Semedo toward the beginning of the second half however it was Messi who broke the halt in the 64th moment, firing a low free-kick under the wall and into the bottom corner.
Brazilian Coutinho increase seven minutes from time, gathering the ball on the edge of the zone and showing some snappy feet before curling home.
Messi opened in a third in the main moment of stoppage time to seal a normal win.
Former Arsenal midfielder Santi Cazorla was an unexpected name in Villarreal's beginning XI against Real Sociedad, playing 72 minutes of a 2-1 crush.
The Yellow Submarine opened the scoring following 15 minutes when Gerard Moreno gathered the ball out wide on the privilege and hustled into the region before reducing to beat two defenders and drilling a shot past the goalkeeper.
Willian Jose leveled for Sociedad in the 39th moment as he took advantage of a sliced clearance from ex-Everton defender Ramiro Funes Mori to keep running on and smash home.
More poor defending enabled the visitors to make it 2-1 through Juanmi's very much set shot from outside with 20 minutes remaining.
The introduction of new signing Carlos Bacca couldn't motivate Villarreal as the visitors hung on.
Iago Aspas earned Celta Vigo a point in a 1-1 draw at home to Espanyol.
The visitors led the pack just before the break through Mario Hermoso, who pummeled the ball home from a corner. Be that as it may, Celta Vigo were back on level terms right off the bat in the second half when Aspas changed over a cross from left-back Junior Alonso.
Maxi Gomez was denied a winning goal by VAR.