Barcelona midfielder Xavi was impressed by Atletico Madrid on Saturday.
Atletico have been criticised for their tactics after the 0-0 draw.
But Xavi insists: "Atlético Madrid are a very compact team, well worked and currently one of the best in Europe.
"Atlético play very differently than we do, but they do a great job; physically they are very strong, they don't give you any space and it's hard to create chances against them."
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