Know thy self, know thy enemy. A thousand battles, a thousand victories.Sun Tzu
For FC Barcelona it's a familiar Spanish affair waiting for them in the Quarter Final stages of this season's UEFA Champions League. Without any doubt the clash between the current table topper and second placed side La Liga sides are the most eye-catching and toughest clash of this round of Knockout Stage. Barcelona without any doubt would be full of confidence having already beaten Atletico Madrid twice in their League encounters this season. Even though both of these matches were real tough, Barca will be once again hoping that Lionel Messi, the five time Balon d'Or Winner will continue his excellent form against the second team from Capital and pull them through.