Are you really surprised with that outcome yesterday? Despite that I didn't expect that much humiliation, I wasn't too surprised because Athletico Madrid always turn prime against Real Madrid. Well, I quite agree that Madrid haven't had a test yet this season until yesterday and unfortunately they failed the test. Let be realistic here, Madrid defense is nothing to write home about and this might just be the beginning of failure if things continue this way. As for Athletico Madrid, they can do better if they continue to play with the type of seriousness they use to play against Real madrid all the time.
I just noticed that Atletico's performance was different from previous matches. When facing Madrid, for some reason, they could play well with full competitiveness. Not always, but they really can turn every opportunity into pressure on Madrid's defense. This time, they were superior, and it indeed became an exciting match with many goals. But for sure, the result becomes a task for Xabi to solve problems in several areas.