MADRID - Real Madrid suffered a huge blow to their La Liga title hopes with a 2-1 defeat to Sevilla, their second defeat in four days.
Colombian striker Carlos Bacca struck twice yesterday to give the hosts a sixth consecutive league win after Cristiano Ronaldo had opened the scoring.
Atletico Madrid now lead Real Madrid by three points at the top of the table and have a better head-to-head record against Los Blancos after they beat Granada 1-0.
Barcelona moved into second place, a point behind Atletico, with a 3-0 win over Celta Vigo at the Camp Nou.
But it was a bittersweet night for the Catalans as goalkeeper Victor Valdes may have played his last game for the club after suffering cruciate ligament damage that will rule him out of the World Cup.
Madrid were looking to react from a first defeat in 32 games on Sunday with Gareth Bale and Karim Benzema going close inside the first 10 minutes.
Ronaldo did open the scoring 14 minutes in as his free-kick cannoned off Ivan Rakitic to leave Sevilla goalkeeper Beto helpless.
The lead lasted only four minutes as Bacca finished off a fine move by converting Jose Antonio Reyes' pass from close range.
Madrid continued to press after the break, but were struck on the counterattack 18 minutes from time when wonderful play by Rakitic took him past Pepe and the Croatian played in Bacca to fire home his second of the night.