Real Madrid cannot repeat their second-half performance in their 2-1 win over Granada if they want to clinch the title, according to Sergio Ramos.
Zinedine Zidane's side raced into a two-goal lead on Monday, Ferland Mendy scoring his first goal for the club from a tight angle before Karim Benzema curled home a fine finish.
Granada boss Diego Martinez tinkered with his tactics and Darwin Machis pulled one back for the hosts early in the second half.
Antonin had a volley kept out by Thibaut Courtois and Ramon Azeez had a shot cleared off the line by Ramos in the closing stages, with Madrid clinging on for a result that puts them one win away from being crowned champions in Spain.
Madrid can do that by defeating Villarreal at home on Thursday, but Ramos warned his team-mates they must improve.
"We let our guard down a little bit in the second half when we saw it was 2-0," Ramos told Movistar. "Instead of going to kill the game and looking for the third, we relaxed.
"These things cannot happen because anyone can beat you if you don't keep the intensity. We've got to concentrate for 90 minutes. We won the first half but lost the second – maybe that's something to reflect on for the future.
"We let a goal in after a few games without doing so. It's a good victory for our spirits but it comes with a bad feeling after a bad second half.
