Nacho scored the only goal of the game.
And Zidane said, "It's three important points, but nothing more. There is a lot to come in the league and it will be difficult for every team and for us too. We're happy with the result, it was very hard fought and we played a very solid game defensively. In the second half we were better. We got three points from a difficult place against an opponent who made it difficult for us.
"Defensively we are doing very well. That's our strength. We all defend and when we lose the ball we immediately press and win it high up the field. If we don't concede, we have a good chance of scoring. That's what happened today."
On being LaLiga leaders, he added: "It doesn't change anything. We are happy with the victory, for the hard work done and for having fought until the end. There are still 17 games left and if we want something we will have to fight until the end. Today we are first and we will have to fight until the end. There is a long way to go in LaLiga".