Sporting collapse leaves Atletico title bid in tatters
Sporting Gijon scored twice in the final 11 minutes to land a huge blow to Atletico Madrid's La Liga title challenge with a 2-1 win on Saturday.
Antoine Griezmann's sunning frist-half free-kick put Atletico in front.
However, Atletico felt the after effects of their efforts in seeing off PSV Eindhoven after extra-time and penalties in the Champions League in midweek as Antonio Sanabria and Carlos Castro turned the game around in the final stages.
Barcelona can now move 11 points clear at the top when they travel to Villarreal on Sunday.
Third-placed Real Madrid can also close the gap on Atletico to a point when they host Sevilla.
Atletico boss Diego Simeone named a youthful side with an average age of 23 as he made five changes from the team that started against PSV on Tuesday.
However, Griezmann retained his place up front and was once again Atletico's only serious goal threat as he opened the scoring just before the half hour mark.
Sporting had reason to feel hard done by as Pablo Perez looked to have taken the ball before making contact with Saul Niguez on the edge of the area.
And there was no stopping Griezmann's effort from the resulting free-kick as he curled the ball over the wall and into the top corner.
Simeone looked to hold out for the three points as he withdrew his three most attacking players in Griezmann, Angel Correa and Luciano Vietto after the break.
However, for once Atletico's defensive resilience let them down.
Sanabria fired a warning shot when he struck the post from a free-kick 12 minutes from time.
But presented with a similar opportunity a minute later, the Paraguayan rifled a free-kick through the Atletico wall to leave Jan Oblak unsighted.
Castro missed a glorious chance to make it 2-1 four minutes from time when he smashed Sanabria's unselfish square ball off the bar in front of an open goal.
Of further concern for Atletico was that opportunity came about as Jose Maria Gimenez pulled up with a hamstring injury making him a doubt for the first-leg of their Champions League quarter-final away to Barcelona on April 5.
With Simeone having made all three substitutions, the visitors had to see out the final few minutes with 10 men.
And they couldn't do it as Sanabria again burst down the left and this time his low cross was converted at the far post by the relieved Castro.