Vinicius Junior got on the scoresheet for Real Madrid but it was not enough to prevent them falling to a shock 2-1 defeat to Osasuna at Estadio El Sadar in LaLiga on Saturday.
Real Madrid remain just a point behind Barcelona in the race for the LaLiga title after both sides won at the weekend.
Barcelona maintained their lead over Real Madrid in the LaLiga standings with a hard-fought 2-0 win over a Villarreal side that proved to be a tough nut to crack, despite going down to 10 men for most of the game.
Real Madrid stayed top of La Liga despite being held to a draw at Elche on Sunday, while Atletico closed the gap to the leaders with a narrow win against Getafe.
Xabi Alonso said Real Madrid "had to accept frustration" after his side battled to a 2-2 draw at Elche on Sunday, a result that extended their winless run to three matches but still returned them to the top of La Liga by one point.
Barcelona returned to winning ways after last weekend's El Clasico disappointment, seeing off Elche 3-1 at the Estadi Olímpic Lluis Companys.