Arsène Wenger believes Arsenal need to rediscover their defensive confidence after enduring a "terrible" start to the new season following yesterday's 4-3 defeat at Blackburn Rovers.
Having been in control at half-time with a 2-1 lead, the Gunners disintegrated, conceding three second half goals, which included own goals from Alex Song and Laurent Koscielny.
The Ewood Park loss – their third from five Barclays Premier League games, leaves Arsenal with just four points, and condemns them to their worst start to a domestic campaign since Wenger took over in 1996.
A new-look back four that included full debutant Andre Santos and recent signing Per Mertesacker – who was brought in to shore up the Gunners leaky defence – struggled to deal with the threat imposed by Rovers, and Wenger admits that defensiv improvements need to be made.
"You could see that the confidence in our defenders has gone a little bit and it is important to get it back," he said.
Arsenal have now conceded 14 goals already this season but the Frenchman is confident his players have the quality to put things right, starting with Tuesday's visit of Shrewsbury Town in the Carling Cup.
"It is important that we get our confidence back quickly," he continued. "We made mistakes and, at this level, you cannot make the mistakes that we made.
"We were guilty [because] we made basic errors. But now you just have to focus on the next game."