Real Madrid were held to a 1-1 draw at the Santiago Bernabeu on Sunday as they dropped points for the first time this season.
Los Blancos perfect start to the season has been marred leading to Carlo Ancelotti’s side slipping to second in LaLiga behind arc rivals Barcelona on goal difference.
Vinicius Jr opened the scoring for the hosts in the dying embers of the first half, before Kike Garcia equalised shortly after the restart as Madrid taste first setback of the campaign.
The LaLiga champions had the chance to double their lead after David Garcia was sent off in the 78th minute but Karim Benzema missed the resultant penalty kick with his effort hitting the woodwork.
The hosts huffed and puffed but Osasuna managed to hold on until the final minute.