Cesc Fabregas curled a ball into the box for Lionel Messi who, with his back to goal, chested the ball into the path of an onrushing Sanchez, who smashed a first time effort from the tightest of angles just inside the top right of the Atletico goal. Striker Diego Costa went off injured for Atletico early on and Barcelona capitalised as Alexis Sanchez smashed in a superb opener.
Alexis Sanchez went on to become a highly rated player at Arsenal, before a highly hyped move to Manchester United that did not go as well as expected.