Real Madrid has kept Barcelona in its sights with a 2-0 win over Rayo Vallecano - but it remains eight points behind the Catalan side, which is yet to drop a point this season.
Karim Benzema struck after 13 minutes and Cristiano Ronaldo added a second mid-way through the second half on Monday as Jose Mourinho's side came out on top in the match postponed from Sunday due to floodlight sabotage.
In injury time Jose Casado was dismissed for the home side after receiving his second yellow card.
The green light was finally given to play the game on Monday evening at Rayo's Estadio de Vallecas ground.
The pressure was on after Barcelona beat Granada 2-0 on Saturday, its fifth win in succession, while Madrid had only one.
Real Sociedad continues to hold the edge in the battle for a top-four finish in the Primera Division after a 2-1 victory at Sevilla.