MADRID, Oct. 18 (Xinhua) -- Real Sociedad went top of the table after the sixth round of matches in the La Liga this weekend thanks to a 3-0 win away to Betis.
The side from San Sebastian produced an excellent all-round display in a game between the teams who had started the weekend second and third in the table.
Sociedad opened the scoring when Portu headed home Mikel Oyarzabal's cross two minutes before halftime.
Oyarzabal scored his team's second goal from the penalty spot in the 74th minute after Marc Bartra was penalized for pulling back Real Sociedad striker Alexander Isak.
Adan Januzaj then rounded off an emphatic win with a thumping shot 14 minutes later.
After a 2-1 home victory over Valencia, Villarreal climbed to the second place on goal difference.
Valencia sold midfielder Dani Parejo to join Villarreal in the summer to try and cut their wage bill but it worked out to be expensive when Parejo scored Villarreal's winning goal in the east coast derby.
Paco Alcacer's penalty put Villarreal ahead in the sixth minute. Although Goncalo Guedes' 37th minute thunderbolt leveled the score, Parejo's deflected shot in second half still gave the three points to Villarreal.
Cadiz produced the shock of the weekend on Saturday with a 16th minute goal from striker 'Choco' Lozano giving the recently promoted side their first ever away win against Real Madrid.
Barca fared no better than Madrid as they lost 1-0 in Getafe.
Real Madrid now sits in third while the Barca is in ninth place.