Match ends, Atlético de Madrid 1, FC Sevilla 1.
Atletico Madrid missed the opportunity to go top of La Liga as visitors Sevilla earned a deserved point at the Vicente Calderon.
Diego Simeone's side knew they could go two points clear of Barcelona and led through David Villa's low strike.
But they were pegged back when Sevilla, who ended with 10 men after Alberto Moreno's late red card, levelled through skipper Ivan Rakitic's penalty.
Atletico stay second behind Barca, who drew at Levante, on goal difference.
Third-placed Real Madrid, who cruised to a 5-0 win at Real Betis on Saturday, are now only one point behind the pair after trailing by five going into last month's winter break.
Carlo Ancelotti's side are the biggest winners on the first weekend since the turn of the Spanish season after watching both of their title rivals unexpectedly slip-up.
Ahead of kick-off at Atletico's game, there was a sense of expectation among a noisy home crowd buoyed by the news filtering through from Levante that Barcelona had dropped points.
And the party atmosphere continued as their team profited from a high-tempo start with Villa's opener.
The Spain striker, who joined Atletico from Barcelona in the summer, smashed through a crowded penalty area after Sevilla keeper Beto failed to punch clear home skipper Gabi's right-wing cross.
But the mood of Atletico darkened - particularly that of coach Simeone, who became increasingly animated on the touchline - after defender Juanfran was rightly punished for tugging Sevilla striker Carlos Bacca's shirt inside the penalty area.
Despite a long delay, Croatia international Rakitic kept his nerve to fire into the left corner above Atletico keeper Thibaut Courtois's despairing dive.
Sevilla midfielder Moreno was shown a straight red card after tangling with Gabi in the dying moments, but Atletico could not make their numerical advantage count.
- 20Torres BelénBooked at 71mins
- 3Filipe Luís
- 14Fernández ArenasBooked at 72mins
- 8Garcia Escudero
- 6KokeSubstituted forSosaat 88'minutes
- 19Diego Costa
- 9VillaSubstituted forRodríguezat 81'minutes
- 7López Álvarez
- 23Andújar Moreno
- 3Navarro Corbacho
- 21ParejaBooked at 13minsSubstituted forGameiroat 45'minutes
- 20Machín PérezSubstituted forMarinat 64'minutes
- 9BaccaSubstituted forReyesat 84'minutes
- 11RakiticBooked at 90mins
- 32MorenoBooked at 89mins
- 1Varas Herrera
- 17Samperio Bustara
- Alejandro José Hernández Hernández
- Shots on Target
Second Half ends, Atlético de Madrid 1, FC Sevilla 1.
Attempt blocked. José Sosa (Atlético de Madrid) right footed shot from outside the box is blocked.
Corner, Atlético de Madrid. Conceded by Fernando Navarro.
Foul by Arda Turan (Atlético de Madrid).
José Antonio Reyes (FC Sevilla) wins a free kick in the defensive half.
Raúl García (Atlético de Madrid) is shown the yellow card.
Kevin Gameiro (FC Sevilla) is shown the yellow card.
Alberto Moreno (FC Sevilla) is shown the red card for fighting.
Raúl García (Atlético de Madrid) wins a free kick in the defensive half.
Foul by Alberto Moreno (FC Sevilla).
Arda Turan (Atlético de Madrid) wins a free kick in the defensive half.
Foul by Coke (FC Sevilla).
Substitution, Atlético de Madrid. José Sosa replaces Koke.
Foul by Diego Godín (Atlético de Madrid).
Daniel Carriço (FC Sevilla) wins a free kick in the defensive half.
Cristian Rodríguez (Atlético de Madrid) wins a free kick in the attacking half.
Foul by José Antonio Reyes (FC Sevilla).
Corner, Atlético de Madrid. Conceded by Federico Fazio.
Attempt blocked. Gabi (Atlético de Madrid) right footed shot from outside the box is blocked.