Arsenal manager Arsene Wenger was disappointed with the manner his side lost their Carling Cup semi-final against Manchester City.
Substitute Sergio Aguero capped a stunning City counter-attack with the decisive goal with seven minutes left to help City into the last four, after the hosts had dominated proceedings throughout.
And the French boss found defeat difficult to take as his young guns shone against the glitz of City.
"It was an unfair result but I felt we were a bit naive because it was a corner for us and a goal for them," he said.
"I knew that we were in trouble and I feel we didn't take enough time to take the corner because Djourou was just going up front and he had to stay at the back on the corner. We didn't leave him enough time to come back and that's where we were caught.
"I felt as well that we didn't take the corners very well but overall what is frustrating that we lost a game at the moment that we looked the winner.
"It is frustrating because we put a lot of effort in and we were not rewarded. On the other hand I feel that considering the youth of our midfield we have battled really well and have shown some fantastic quality."
"I felt we made it easy for them," Wenger added.
"They had a clear-cut chance and you couldn’t see them missing. They played very well but I felt we were a bit naïve because we could stop that at the start of that move. You cannot let them get on a run like that.
"Overall, I felt that we were naïve and you can call that bad luck.
But I don’t believe in luck. I believe we had to stop the counter-attack and you know when you are on a corner, that is your job when you are a defender. You have to stop that."
With The Gunners not considered to be Barclays Premier League contenders and their involvement in the FA Cup not commencing until the new year, the League Cup was the club's best chance to land some silverware, which makes crashing out at the last-eight stage even harder to take for Wenger.
"I look at it badly but on the other hand, I feel I want to take the positives out of tonight’s game and of our run," he said.
"We have a fantastic attitude and spirit and we have quality. How far can we go this season? I feel if we keep this attitude, we can have hope.
"You can argue that we lost the easiest trophy to win but as well if you look at the teams who are still in it, it does not look as easy to win as usual."
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