In my on opinion real madrid didn't play well in the match because all the players are just performing weak games in the pitch,because they really see real Sociedad as a weak team, an they didn't put body in the match. If not the goal that Endrick scored madrid should have draw the match and make it difficult for Madrid to qualify to the final. There next game wil be playing in real madrid home and am already believe that Real Sociedad as be eliminated in the competition because they can challenge real madrid at home, let see how the competition will goes. Is only Barcelona and Athletico Madrid will be tough in the second leg because they end in a draw game and no one as get the advantage of qualifying to the final yet.  Let see what will happen in the second leg and see who will be the favorite of winning the match and move to final with real madrid.  Ancelotti just need to be very careful by doing information because madrid lineup yesterday was not good because if is another club they can probably defeat madrid. Guler don't even show on that match, I think like Is not too fit in the game.