Werner froze in Moscow
Atletico boss Simeone left first-choice goalkeeper Jan Oblak on the bench and his replacement was unable to stop a long-range missile from Maciej Rybus.
Axel Werner started in goal for Atletico but the young Argentine could do nothing to stop a wonder-strike from Maciej Rybus.
After travelling over 7,000km to put the Europa League round of 16 to bed against Lokomotiv, Simeone's decision was questioned as the hosts equalised Correa's earlier goal.
With Werner unable to see through a sea of legs, Rybus fired from around 25 yards, finding the bottom corner.