Who will become the champion this season will be decided in the matches Atletico Madrid - Barcelona and Barcelona - Real Madrid. I think all other matches and Atletico Madrid and Barcelona will win. Real Madrid will be quite difficult to play in two tournaments. Besides they are 6 points behind Atletico Madrid.
It is almost impossible for any club to play all matches without losses in such a strong league as the Spanish La Liga. Therefore, I think that all teams will still lose points, including Real, Atlético and Barcelona. After all, there are still more than 10 rounds left before the finish (
http://lafuriaroja.ru/chempionat-ispanii/), and the champion will most likely be the one who will lose the least points in the remaining games.