Atletico Madrid beat Real Madrid with a score of 1: 0 kick which resulted in Yannick Carrasco's goal from the penalty spot after Matheus Cunha was brought down.
Six points clear of Real Betis in 5th, Diego Simeone's men remain in fourth.
Atletico held on to a win putting them just one point behind third-placed Sevilla. And the hosts missed a chance to double the lead with a shot that went wide and was saved by Cunha after Antoine Griezman's fine form.
Before Carrasco found the net a few moments later. Griezman made a terrific combination in the shared box and the French forward shot wide of Andriy Lunin's goal.
The Brazilian forward's tactics and style made a good chance for Marco Asensio, blocked. Federico Valverde tested the Atletico goalkeeper twice but did not score.
Champions Carlo Ancelotti still has three league games before meeting Liverpool in the Champions League final in Paris.
Atletico Madrid with a 4-4-2 formation and Real Madrid 4-3-3, with Match Stats Possesion Atl Madrid 41% and 59%, Shots Atl Madrid 16% Real Madrid 15%, Shots on target Atl Madrid 2% Real Madrid 6 %, Corners Atl Madrid 4% Real Madrid 6%, Fouls Atl Madrid 17% Real Madrid 7%.