Match ends, Barcelona 4, Real Sociedad 0.
Barcelona remain four points clear at the top of La Liga after an emphatic win which saw Lionel Messi score his first league goal for two months.
Neymar opened the scoring with a composed left-foot finish before Luis Suarez doubled the lead with a brilliant volley before half-time.
It was 3-0 shortly after the interval, Neymar scoring his 14th goal in 12 La Liga appearances.
Messi completed the scoring after meeting Neymar's cross.
It was the Argentina forward's third goal in two starts since suffering a knee injury in a 2-1 win over Las Palmas on 26 September.
Messi has been linked with a move to Manchester City but the 28-year-old did not let the speculation spoil his performance as Barcelona secured a sixth successive victory.
Luis Enrique's side dominated their lowly opponents, Suarez's acrobatic finish the highlight of a clinical team performance.
They have scored 14 goals in the past three games, while Messi looks to be nearing the form which saw him score 43 goals to help Barcelona to the La Liga title last season.
Barca have 33 points from 13 games.
Third-placed Real Madrid, who were hammered 4-0 by Barca last weekend and are now nine points off the pace, play Eibar on Sunday.
Barca's win took them seven points clear of nearest rivals Atletico Madrid, who later reduced the deficit back to four with a 1-0 win over Espanyol thanks to Antoine Griezmann's goal.
Atletico midfielder Tiago, 34, broke his right leg during the game.
- 6Alves da SilvaSubstituted forCorreiaat 62'minutes
- 14MascheranoSubstituted forBartraat 69'minutes
- 24MathieuSubstituted forAlbaat 66'minutes
- 1ter Stegen
- 17El Haddadi
- 30ElustondoBooked at 56mins
- 6Martínez Berridi
- 19Berchiche IzetaBooked at 28mins
- 16CanalesBooked at 48minsSubstituted forOyarzabalat 58'minutes
- 14Pardo GutiérrezBooked at 50mins
- 8GraneroBooked at 37mins
- 10Prieto Argarate
- 11VelaSubstituted forNa Bangnaat 81'minutes
- 9AgirretxeSubstituted forHernández Ortegaat 73'minutes
- 7Na Bangna
- 21Hernández Ortega
- 24De la Bella
- Ignacio Iglesias Villanueva
- Shots on Target
Second Half ends, Barcelona 4, Real Sociedad 0.
Sergio Busquets (Barcelona) wins a free kick in the defensive half.
Foul by Rubén Pardo (Real Sociedad).
Goal! Barcelona 4, Real Sociedad 0. Lionel Messi (Barcelona) left footed shot from very close range to the bottom right corner. Assisted by Neymar.
Attempt blocked. Lionel Messi (Barcelona) left footed shot from the centre of the box is blocked. Assisted by Neymar.
Lionel Messi (Barcelona) hits the bar with a left footed shot from the right side of the box. Assisted by Neymar following a fast break.
Attempt saved. Bruma (Real Sociedad) right footed shot from the left side of the box is saved in the centre of the goal. Assisted by Mikel Oyarzabal.
Attempt missed. Mikel Oyarzabal (Real Sociedad) header from the centre of the box is high and wide to the left. Assisted by Aritz Elustondo with a cross.
Corner, Real Sociedad. Conceded by Gerard Piqué.
Attempt missed. Bruma (Real Sociedad) right footed shot from the centre of the box is close, but misses to the left. Assisted by Xabi Prieto with a headed pass.
Attempt missed. Bruma (Real Sociedad) right footed shot from outside the box is close, but misses to the right. Assisted by Mikel Oyarzabal.
Attempt missed. Bruma (Real Sociedad) left footed shot from a difficult angle on the left is too high. Assisted by Mikel Oyarzabal.
Substitution, Real Sociedad. Bruma replaces Carlos Vela.
Adriano (Barcelona) wins a free kick in the defensive half.
Foul by Carlos Vela (Real Sociedad).
Corner, Barcelona. Conceded by Mikel González.
Dangerous play by Jordi Alba (Barcelona).
Xabi Prieto (Real Sociedad) wins a free kick on the right wing.
Attempt blocked. Mikel Oyarzabal (Real Sociedad) left footed shot from outside the box is blocked.