Yannick Carrasco put Atletico ahead in the fifth minute before Cristian Tello equalised in the 20th minute.
A draw means that Atletico Madrid retook their place at the top of LaLiga.
However, the gap between them and Real Madrid is now slighter than it was before Matchday 30.
The Los Blancos are only one point back after their win over Barcelona.
Atletico and Real Madrid face Eibar and Getafe respectively in Matchday 31 with the title race tighter than ever.
Sevilla are also still in contention, if they can beat Celta Vigo on Monday night to move to within six points of leaders Atletico.
Atletico Madrid who were 10 points clear at the end of January have only won three of their past 11 games in all competitions.
They look to be running out of steam as the title race becomes stiffer each passing day.