Thomas Partey came on as a second-half substitute but could do little in preventing Atletico Madrid from falling to a 2-1 extra-time defeat to Spanish third division side Cultural Leonesa in the third round of the Copa del Rey on Thursday night.
Los Rojiblancos were on the receiving end of a 2-0 loss at Eibar last Saturday and therefore needed redemption here.
Diego Simeone used a second-string squad here with Partey one of the few recognisable faces on the bench.
The Ghana international came on at the start of the second half but the opening goal did not come until the 62nd minute through Angel Correa.
Atleti would have expected to secure a place in the fourth round but were pegged back when Julen Castaneda equalised seven minutes before the end of regular time.
On came extra-time and Sergio Benito popped up with the winner for the Segunda Division B outfit in the 108th minute.
Despite the shock result, Partey put in a good shift, providing 58 touches, 40 accurate passes (85.1%), two key passes and five successful long balls from eight.
The 26-year-old had two shots on target, one successful dribble and two interceptions.
Atleti return to league action with a home tie against Leganes on Sunday.