Barcelona's problem in Europe: Fewer shots and kilometres ran than their opponents Barcelona From the three games played

Barcelona left Slavia Prague's Sinobo Stadium with a bittersweet taste, having won the game that put them top of Group F but finishing the game with a sombre look on the players' faces, who then proceeded to ignore journalists in the mixed zone..

Ernesto Valverde's side were overrun by Slavia at times in Wednesday's clash, unable to finish the match as a contest and that led to Marc-Andre ter Stegen having to once again be at his best.

The data exemplifies the problems that Barcelona are having in Europe because what happened in the Czech Republic is a continuation of what was evident against Borussia Dortmund and Inter.

Barcelona's defensive system is not working. Proof of this is shown with the amount of shots Ter Stegen has faced, with it being the highest figure in Valverde's tenure: 34 compared to the 21 the Catalans have attempted themselves.

The worrying fact is that this is not because of one poor performance; it's a trend that the three games have brought to the fore. Both Dortmund and Slavia played far better than Barcelona, and even at home to Inter, the Nerazzurri looked like they were at a different level to the Blaugrana in the first half.

The other statistic that cannot go unnoticed is the distance ran by the players. In all three matches, the opponents have put in a bigger shift than Barcelona, accumulating a distance of 26 kilometres more in the three games played.

The problem is that the trend is getting worse, too: Dortmund ran three kilometres more; the difference in distance with Inter was eight kilometres in favour of the Italians; and Slavia covered an incredible 15 kilometres more than Barcelona.

The less you run, the less mobility there is in attack, which reflects the problem Barcelona's midfielders have had in finding the forwards in good attacking positions.

In many moments during the Catalans' matches in the Champions League this season, they look static. They are allowing their opponents to have multiple chances to score and, but for Ter Stegen in goal, they would surely be struggling in their group.

One positive is that Barcelona have always had more possession, yet the two issues currently plaguing Valverde's side are ones that need to be addressed immediately.