Barcelona is still leading the rankings, this shows that Barcelona's performance has changed quite well, because previously they had quite serious problems but they were able to get through them well. Although this can still be said to be early in the season, this is better for those who can be in the top rankings.
I think Flick has been quite successful in nurturing these Barcelona players who are as they are with the current results they can still maintain their victory because they show quite extraordinary performance. And it seems that Barcelona is now ready to compete and face Real Madrid who are undoubtedly with their performance.
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