Barcelona cruised to a 4-0 rout over 10-man Real Sociedad to regain the lead in Spain on Sunday.
Gerard Martín, Marc Casadó, Ronald Araujo and Robert Lewandowski scored a goal each to put Barcelona one point ahead of second-placed Atletico Madrid at the top of the Spanish league. Barcelona is three points ahead of third-placed Real Madrid, which lost 2-1 at Real Betis on Saturday, when Atletico beat Athletic Bilbao 1-0 at home.

Sociedad played a man down from the 17th minute after Aritz Elustondo was sent off with a straight red card for grabbing Barcelona forward Dani Olmo to stop a breakaway.

It was the sixth win in a row for Barcelona in the league, and the second loss in three matches for Sociedad, which stayed in ninth place.
Barcelona was in control from the start at Montjuic stadium, with Martín scoring in the 25th and Casadó in the 29th. Araujo added to the lead in the 56th and Lewandowski closed the scoring in the 60th for his eighth goal in his last nine matches.
Lewandowski now has 34 goals this season in all competitions, one more than the 33 he scored in what had been his previous best season with the Catalan club in 2022-23.

Sociedad, which along with Barcelona, Madrid and Atletico is playing in the Copa del Rey semifinals, struggled from the start and had no attempts on goal.
Sociedad defender Hamari Traoré entered the match in the second half to mark his return to action nearly six months after having to undergo knee surgery.
Earlier Sunday, striker Diego García scored two minutes into second-half stoppage time to give 16th-placed Leganes a 1-0 win over 14th-placed Getafe in a match between teams from the Madrid area.
Valencia later Sunday has a chance to move out of the relegation zone with a win at Osasuna.