Bayer Leverkusen coach Roger Schmidt lamented his team's lack of concentration in the penalty shoot-out during their UEFA Champions League exit on Tuesday.
Atletico Madrid claimed a 3-2 shoot-out victory after the last-16 tie finished 1-1, with Hakan Calhanoglu, Omer Toprak and Stefan Kiessling unable to convert penalties for Leverkusen.
Schmidt was full of praise for Diego Simeone's men, but said his team lacked the composure needed in a shoot-out.
"I want to congratulate Atletico on their qualification. The match was played at full pelt. I want to congratulate my team too," he said.
"We defended very well after the early Atletico goal. We are a young team without too much experience and it's not easy to survive in a stadium like the Vicente Calderon.
"We did not have enough concentration and cold blood in the penalty shoot-out."
Schmidt said he found "five volunteers" for the shoot-out, one that was littered with poor penalties.
Calhanoglu shot straight down the middle and was denied by Atletico goalkeeper Jan Oblak, while Toprak and Kiessling both fired over.
Schmidt urged his team to move on and focus on the Bundesliga, where they sit in the Champions League qualifying spot - three points clear of Schalke.
"The disappointment is big and there is a lot of sadness because we didn't get the result we wanted," he said.
"My players did their best on the pitch and they must accept the result.
"Now they must be focused on the Bundesliga to qualify for next season's UEFA Champions League."