Real Madrid captain Sergio Ramos was left frustrated after their 1-1 draw at Valencia.
Real needed an injury time equaliser from Karim Benzema to cancel out the opening goal from Carlos Soler.
"I think we controlled the game well, with balance," said Ramos. "We had a tough rival against us. We can't press for 90 minutes but we went until the end, we got a point that allows us to stay leaders.
"When you don't take the three points, well, you leave feeling 'that's a shame'."
Ramos spoke about the Clasico.
"I think the two teams are at a good level of form and a Clasico is a Clasico. We arrive prepared and we'll try to get the three points there."