Ferland Mendy scored a stunning late winner as Real Madrid clinched a hard-working last-16 first-leg win against 10-man Atalanta.
Zinedine Zidane’s side looked like being left frustrated by a well-organised home side until Mendy curled in with four minutes left.
Atalanta’s Remo Freuler was sent off after just 17 minutes for denying Mendy a clear goalscoring opportunity.
The depleted hosts did not have a single shot on target and now must score in the return leg on 16 March.
Real were without a number of key first-team players through injury including captain Sergio Ramos, Karim Benzema, Eden Hazard and Dani Carvajal and it showed for almost the entire contest.
With Atalanta sitting back after Freuler’s early red card for a cynical trip on Mendy, Zinedine Zidane’s side failed to create clear-cut chances.