We did n't have defensive errors and , like the match against Ajax , we improved over the course of the match . Pedro scores hat - trick as Barcelona 's 100 % La Liga run ends . Cesc ##ín also scores in Saturday 's 4 - 0 victory over Rayo Vallecano . Struggling home team edges possession to end Barca 's long - running stat . Gerardo Martino 's team top on goal difference from Atletico Madrid .
Pedro scores hat - trick as Barcelona 's 100 % La Liga run ends . Cesc ##ín also scores in Saturday 's 4 - 0 victory over Rayo Vallecano . Struggling home team edges possession to end Barca 's long - running stat . Gerardo Martino 's team top on goal difference from Atletico Madrid .