I think people are sleeping on Atletico Madrid this season, they have a solid squad and a great coach, they could make a deep run in the UCL, especially if they can get their defense clicking properly.
Los Colchoneros thrashing oppositions in matches played, they are never the best team because, no match for Real Madrid and Barcelona. With constant improvement, Atletico Madrid have been a torn in the flesh of Barcelona and Real Madrid, they're making these rivals to thoroughly calmed their games and win, instead of jeopardizing any chance. Atletico Madrid have a competitive squad, Diego Simeone is confident in his team, they will surpassed more teams this season. But facing Real Madrid alone, there are frighten odds of not making it to the next round.
UCL is tough, Diego Simeone will gather his men and fixed the defendlines, that's his main weakness, he's unable to fit into the dashing competitive race. Atletico Madrid are well known for defensive strategy but today, they conceded more goals than before, not the path road they're willing to go down for. Giving Diego Simeone more time to make things better from his end.