Real Madrid star Cristiano Ronaldo admits defeat to Atletico Madrid was "a day to forget".
Atletico thrashed Real 4-0 at the Vicente Calderon.
"We have to learn from our mistakes in order to improve in the future. This is a day to forget, but we are still top of the league and we know we'll have to fight right until the end. We lost today and we are angry about it but we have to stay positive for the upcoming games because we only dropped three points and we're still first in the table," said Ronaldo.
"Nothing came off for us. We have to put this game behind us as quickly as possible because Real Madrid can't lose 4-0 to any team. We lacked everything: desire, attitude. We weren't fresh physically or mentally... But we can't make excuses. We have to keep our heads up. There is still plenty to go in La Liga and we are still top."