Gareth Bale missed a glorious chance as Atletico Madrid held rivals Real Madrid to a goalless draw in the Champions League quarter-final first leg.
Wales forward Bale was through on goal in the third minute, but was thwarted by Jan Oblak, who was impressive for the home side throughout.
The goalkeeper also made a crucial save from James Rodriguez, as Mario Suarez missed a late chance for Atletico.
The sides meet again in the second leg at the Bernabeu on 22 April.
Real are aiming to become the first team to win back-to-back European Cups since AC Milan in 1989 and 1990, having defeated Atletico in last season’s final.
Carlo Ancelotti’s men have now not beaten their opponents in seven meetings since claiming La Decima – their 10th European Cup – which includes a 4-0 La Liga thumping in February.