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it is indeed common and each team certainly has a different process especially with the arrival of several new players into the squad of course they need to adapt. Barcelona is currently able to perform brilliantly and they have succeeded in reaping perfect points but the competition is still very long and anything can still happen. Real Madrid and Atletico must work hard again to stick closely to el barca, but I am sure the two city teams will return to their best performance.
Maybe it has been said many times that Real Madrid is the favorite team to win the title this season in La Liga. Barcelona is nothing if we look at the depth of its squad compared to Real Madrid, but Barcelona has managed to lead the standings by winning 12 points in 4 consecutive matches. Over time Atletico Madrid and Real Madrid will definitely rise, but if Barcelona can maintain its performance then of course the two teams below will be very pressured.
Real Madrid and Atletico Madrid have not been consistent so far, but lucky for Real Madrid because they were able to avoid defeat. Barcelona can't really be expected to win a 10-match unbeaten run, but they have had the best performance so far.