Real Madrid squandered a chance to climb above Barcelona to the top of La Liga when they were held to a nil all draw at mid-table Osasuna.
A win would have put Manuel Pellegrini's side top on goal difference after Barca dropped their first home points of the season in a 1-all draw with Villarreal.
However, a gritty performance from Osasuna at their claustrophobic Reyno de Navarra stadium and Real's lack of creativity and penetration left the visitors two points adrift of the champions on 38 with 16 matches played.
Undefeated Barca have 40, Valencia, who beat visiting Espanyol 1-nil are third with 32 and Real Mallorca climbed above Sevilla into fourth place with a 2-nil home win over Athletic Bilbao.
