Rayo Vallecano achieved a major upset with a convincing 3-0 victory over Club Atlético de Madrid in La Liga on Wednesday. Santiago Giménez struck in the 16th minute, and goals from Andrés Martín (28') and Alejandro Catena (65') sealed the hosts' impressive win. The result marked a significant boost for Rayo Vallecano's top-eight ambitions, showcasing their ability to compete with La Liga's heavyweights.