Sergio Ramos acknowledged Real Madrid wasted an opportunity to make a statement in La Liga after their goalless draw with Real Betis.
Madrid would have moved top - clear of Barcelona by two points - with a victory on Saturday but failed to take their chances in a subdued encounter at the Santiago Bernabeu.
Betis' Joel Robles made some fine saves late on, having initially denied Ramos an opener just before half-time, while Ferland Mendy also passed up a glorious opportunity to break the deadlock as Madrid were held to a 0-0 draw for the first time under Zinedine Zidane.