Ousmane Dembele slots home the opening goal for FC Barcelona
Dembele's goal sees Barcelona on top in scrappy win over Atletico Madrid
Torres, Savic get sent off following scuffle
Marc-Andre ter Stegen makes a sweet save to keep Barcelona ahead
Last-ditch clearance denies Barcelona the goal
Barca top Atleti to open 3-point gap on Real
Ousmane Dembele scored the only goal of the game as Barcelona beat Atletico Madrid 1-0 at the Wanda Metropolitano on Sunday.