By ESPNSTAR.com staff
The Europa League champions sent in a second-string side in the game in Portugal. Star striker Radamel Falcao had already been announced as not likely to start the game and the La Liga side's gamble failed to pay off as a brace by Wilson Eduardo ensured their first defeat in 17 games in the competition.
Atletico, who have gotten off to a blistering start to the season, only recently suffered their first defeat in La Liga as well. The Madrid side were defeated by Valencia over the weekend and their season could yet unravel if they do not bounce back with a win against Getafe on Sunday.
Koke was somewhat concerned after the game about Los Rojiblancos' recent form however he remains confident that Atletico will not be eliminated from the tournament. He called on his side to win their remaining two games in order to consolidate top spot and ensure an easy last-32 outing.
"Mathematically we haven't qualified and we'll be looking to win both our remaining games in the group - as we do every match," he was quoted as saying by uefa.com.
"We tried everything, but they defended well and created chances on the counterattack. They scored from two good opportunities, one a penalty and the first that came from a throw-in.
"We are continuing with the same hope and expectation as ever despite this result [and the weekend loss to Valencia CF].
"Our philosophy remains to keep working hard and take things game by game."
Youngster Saúl Ñiguez, who was one of the nine players given an opportunity to impress coach Diego Simeone, remains optimistic that the end of their record-breaking 370 days of continual success in the competition does not signify anything more than a mere statistic.
"These winning or unbeaten runs don't really matter to us, and if one has come to an end today, we'll just have to win our next match and start another," he said.
"We have not qualified yet and you have to fight to the death in every UEFA Europa League match, which is what we'll be doing in our two remaining games.
"There's a lot still to play for in the competition."