#3 Barcelona
They may not have the most consistent defensive lineup in the world, but Barcelona surely remain on top of the League table even with 12 goals conceded. The fact that a strong duo of centre-backs is what truly makes a defense glow, La Blaugrana have adapted all sorts of attacking prowesses and have been successful in stopping them. With Gerard Pique being the leader of the back four, Sergio Busquets is often seen falling behind forming a trio with Pique Umtiti or Clement Lenglet.
Jordi Alba being the aggressor from the left, and Sergi Roberto, who is seen to link up the play for the midfielders, the Barcelona defense has been a wall in front of the opposition. Their recent El Clasico match against Real Madrid was evident of the fact that they can carry this form all the way to the UEFA Champions League title, and can also be aiming for a treble.