Sharjah24 - AFP: Robert Lewandowski and Raphinha struck twice each as Barcelona romped to a 5-1 win at Villarreal on Sunday in a wild match to maintain their perfect start to La Liga.
The leaders' sixth straight league triumph was marred by an potentially serious knee injury to goalkeeper Marc-Andre ter Stegen, who was taken off on a stretcher.
"I think it will be a huge injury, when he laid down on the field... you can see it directly," Barcelona coach Hansi Flick told DAZN.
Lewandowski netted Barcelona's first two goals and later missed a penalty in a thoroughly entertaining battle on Spain's east coast at Villarreal's Estadio de la Ceramica.
Ayoze Perez pulled his team back into the game shortly before half-time and the hosts had two goals disallowed, with Pablo Torre and Raphinha's strikes cementing Barcelona's victory.
After second-placed Real Madrid thrashed Espanyol 4-1 on Saturday the Catalans were able to restore a four-point lead on the champions.