Barcelona had won their previous seven games and another victory would have put them back within touching distance of Atletico, even if LaLiga's leaders have played one game fewer.
LaLiga: Sergio Ramos leads Real Madrid to victory over Barcelona as club bounces back from woeful run
Real Madrid lead the league with 13 points. Barcelona have seven with a game in hand.
Barcelona extend contracts of Gerard Pique, Marc-Andre ter Stegen; salaries adjusted temporarily due to pandemic
Barcelona said the agreements for the extensions came after “weeks of negotiations” and included a “temporary salary adjustment” because of the financial difficulties caused by the coronavirus pandemic.
LaLiga: Ansu Fati scores again as 10-man Barcelona beat Celta Vigo for second straight win; Sevilla, Real Madrid too register victories
Barcelona won comfortably despite playing more than half the game with 10 men after defender Clément Lenglet was sent off before the break.
Champions League: Lionel Messi inspires Barcelona to victory against Napoli, seal quarter-final spot
After finishing five points behind Real Madrid in LaLiga, Barcelona resumed in the Champions League with doubts hanging over the form of the team and the future of their coach.
LaLiga: Barcelona dismiss Lionel Messi's injury concern reports after footballer misses group training session
Barcelona said there was no reason to worry about Messi, and that he simply underwent an alternative training program in the gym, some reports said there could be more to it.
In a case involving France defender Clément Lenglet, the Court of Arbitration for Sport ruled Thursday that clubs must pay a sell-on fee when transferring a player whose release clause was activated.
Champions League: Barcelona coach Ernesto Valverde finds silver lining in postponement of first Clasico
Barcelona and Real Madrid agreed last week to postpone La Liga's most prestigious game, which would have been a showdown for the top league spot, giving Valverde's side next weekend off
Didier Deschamps on Tuesday called up an uncapped trio of players, including Barcelona centre-back Clement Lenglet, for a 24-man squad for the friendly against Bolivia, and Euro 2020 Qualifiers matches against Turkey and Andorra.
LaLiga: Barcelona race towards eighth title in 11 years after registering narrow win over Real Sociedad
Barcelona are closing in on their eighth La Liga title in 11 years after Clement Lenglet and Jordi Alba both scored in a 2-1 win over Real Sociedad on Saturday
Euro 2020 qualifiers: Samuel Umtiti, Kingsley Coman return to France squad for Moldova and Iceland matches
Samuel Umtiti and Kingsley Coman return to the France squad named as the World Cup winners prepare for the start of their Euro 2020 qualifying campaign.
LaLiga: Barcelona to consider bolstering defence in January as Samuel Umititi's injury woes continue
Samuel Umtiti missed 10 matches before playing against Atletico, with 23-year-old Clement Lenglet, a summer signing from Sevilla, taking his place alongside Gerard Pique.
LaLiga: Barcelona's injury woes worsen as defender Thomas Vermaelen sidelined for six weeks with hamstring injury
Thomas Vermaelen's problems with injury have reared their head yet again, with the Belgian defender picking up an injury in a match against Switzerland in the Nations League.
La Liga: Ernesto Valverde downplays Samuel Umtiti's knee injury, says Barcelona defender could return against Valencia
Barcelona manager Ernesto Valverde has downplayed Samuel Umtiti's injury, stating that the absence of the French defender will be short-lived and that the team won't be majorly affected.
La Liga: Ten-men Barcelona held by Girona, halt defending champions' unbeaten run; Valencia's wait for first win continues
Barcelona strong start was derailed when defender Clement Lenglet was sent off 35 minutes into his first league start for the club after elbowing Pere Pons, a decision made after referee Jesus Gil Manzano consulted the video assistant referee (VAR).
French defender Clement Lenglet will join up with compatriots Samuel Umtiti and Gerard Pique at Barcelona in a transfer from La Liga rivals Sevilla worth €35.9 million ($42 million), the club said on Thursday.
La Liga: Barcelona defeat Sevilla amidst cries of freedom; Thomas Partey's late strike bails out Atletico Madrid
On his 600th Barca appearance, Lionel Messi had the chance to make the game safe when his low effort was saved by Soria, but Barcelona held on to move 11 points clear of Real Madrid.