Atleti v Barca will be intriguing.
Barca have won 4 of the last 5 there (in all comps). Simeone's men aren't the teak tough defensive unit they were there, lesser sides like Vigo have had joy against them.
Should be another tense tight game, with a red card or 2 thrown in for good measure. If the home side get a result, a win for Real at Villareal might be the key moment in the title race.