Real Madrid and Barcelona have already pulled away from the rest of the teams quite much. Atletico Madrid are the closest team to this duo but even they are 8 points behind Barcelona now.
This isn't a surprising incident of course. It was already obvious from the beginning that Barcelona and Real Madrid would be the most serious title contenders in this season. Atletico Madrid would just fight for keeping the third position in the standings at the end of the season. This time they don't have Sevilla as their biggest rival for the position. That's because of Sevilla's horrible start to the season. Despite changing their manager they are still losing many points and they are nearly in the relegation area.
From which beginning? let's not go so far on time, but there have only been two favorite teams, Real Madrid and Barcelona, if I understand you that you mean at the beginning of this season but it is always like that, the real question is who is third this season, and the table of positions does not tell us anything yet.
I don't think any team La Liga can catch up with Real Madrid though. Atletico Madrid and FC Barcelona are struggling to even grind points. These teams seems not to be up to par at moment to match Real Madrid. However, Real Madrid will slip in couple of games too; making rival fans to hope they can catch up or overtake them but I'm pretty sure this la Liga title has Real Madrid name on it already.
...Really!, with the World Cup and atypical season for those reasons, I think this League is quite uncertain at 1-2, at least as things stand in the table, 32-31, I'm being objective because if there is a team for which I would put money on the table at any time it is Real Madrid, the end of the season in the Spanish League can bring us surprises, for both Barcelona and Real Madrid fans.
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Do you think Xavi has time?, I think so, the Barcelona team and their fans don't.