FC Barcelona's start to the season is being 'almost' perfect. The squad managed by Hansi Flick is maintaining an impeccable pace in LaLiga, where they have won 18 out of 18 and have achieved six victories in a row, with the 'stumble' in the Champions League against Monaco being the only 'but' in terms of results, since at the level of play the culés have not stopped giving their all. However, this spectacular run has a big stain.

And the fact is that the Blaugrana team, despite being an 'overwhelming' force in attack, accumulating 23 goals in favor so far this campaign, continue to show weak points in defense, where they have only been able to keep a clean sheet in one game. It was in the thrashing of Valladolid (7-0), a team that barely had an answer to the 'steamroller' managed by Flick. In the other matches, Barça have conceded at least one goal, revealing the 'Achilles' heel' of the German's system.

Six teams have managed to score against Barça

It all started in Valencia, where the Che team managed to take the lead on the scoreboard, although Lewandowski sealed the comeback with a double. Later, Athletic Club (-1), Rayo Vallecano (-1), Girona (-1) and Villarreal (-1) have managed to 'knock down' Ter Stegen's goal. In Europe, the fate has not been different, with AS Monaco beating the German goalkeeper twice to seal the only defeat for the Catalans so far this season. In this way, it is clear what the great task pending for Flick's Barça is this season.