The contest sparked into life in the 15th minute when the referee awarded Atletico a penalty after a handball by Osasuna defender Javi Galan. Ademola Lookman stepped up to the spot and clinicaly converted with a low drive past goalkeeper Aitor Fernandez to give the visitors an early lead. The opening half was marked by high tension and multiple VAR interventions, including a reversed penalty decision for Osasuna after replays showed goalkeeper Juan Musso had made a clean challenge on Ante Budimir.
Atletico Madrid looked to have put the game out of reach in the 71st minute. Substitute Alexander Sorloth, who has been in clinical form, rose highest to head home a precise delivery from Marcos Llorente. The goal provided a cushion that Atletico would desperately need as the match entered a chaotic final phase.
Drama unfolded in the 79th minute when Llorente, who had already been cautioned, received a second yellow card for a foul on Aimar Oroz. Forced to play the final eleven minutes plus stoppage time with a numerical disadvantage, Atletico retreated into a defensive shell. Osasuna capitalized on the pressure in the 90th minute as Kike Barja fired a powerful shot into the top corner following a cutback inside the area.
Despite a frantic period of stoppage time where the home side poured forward in search of an equalizer, Atletico's disciplined backline held their nerve. The victory ensures that Simeone's men maintain their advantage over chasing teams in the standings as they approach the final week of the 2025-26 campaign. Atletico will now turn their attention to their upcoming home fixture against Girona as they look to mathematically confirm their place in next season's Champions League.