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.

Another week at the top of the Liga table thanks to goals from Gerard Martín, Marc Casadó, Ronald Araujo and Robert Lewandowski

Barcelona made light work of 10-man Real Sociedad, storming to a 4-0 victory to reclaim the La Liga lead. Gerard Martín, Marc Casado, Ronald Araujo, and Robert Lewandowski found the net as Barcelona moved a point clear of Atletico Madrid at the summit.