Centre back Gregory Arnolin put Sporting ahead in the third minute .
Xabi Prieto equalised for Real Sociedad eight minutes later , firing past Sporting goalkeeper Juan Pablo Colinas from the edge of the area .
Centre back Gregory Arnolin put Sporting ahead in the third minute , but Xabi Prieto equalised for Real Sociedad eight minutes later , firing past Sporting goalkeeper Juan Pablo Colinas from the edge of the area .