Luis Suarez's 88th-minute winner against Osasuna has left Atletico Madrid on the brink of clinching the La Liga title for only the second time since 1996.
Atletico Madrid honed in on the La Liga title with a 2-1 win over Real Sociedad on Wednesday to move four points clear at the top of La Liga.
Barcelona and Atletico Madrid played out a tense goalless draw at the Camp Nou that suits neither side, handing the advantage to Real Madrid in the La Liga title race.
Nine of the original Super League clubs - including the Premier League's 'Big Six' - have declared their commitment to UEFA.
Man City are on the brink of being crowned Premier League champions while Inter Milan ended Juventus' nine-year reign in Italy, but it is all to play for in La Liga.
Atletico Madrid stayed in charge of La Liga's four-way title race by earning a nerve-shredding 1-0 victory at struggling Elche on Saturday.
Antoine Griezmann scored twice as Barcelona's La Liga title challenge regained pace with victory at Villarreal, while leaders Atletico Madrid lost to Athletic Bilbao.