It has been an impressive start to Arsenal's 2013-14 campaign but there have been a few jitters of late.
With the loss at home to Borussia Dortmund a week ago, another home loss, this time to London rivals Chelsea, saw Arsenal make an early exit out of the Capital One Cup.
Both sides made numerous changes - Chelsea made 10 changes from the side that snatched a late winner at home to Manchester City at the weekend, while Arsenal made eight changes from the side that earned a hard fought win at Crystal Palace.
The contest was hard fought and Chelsea's second-choice XI settled a lot faster than Arsenal's.
Arsenal struggled to get a foothold in the game. A piece of slack defending from Carl Jenkinson let in Cesar Azpilicueta who picked up on the Arsenal right-back's poor header and stabbed it passed an onrushing Lukasz Fabianski.
Arsenal boss Arsene Wenger made some changes in the second-half but you never really felt Chelsea were in much danger.
Arsenal target Juan Mata soon made it two with a sumptuous finish on 66 minutes - ending the game as a contest.
This result just highlights the lack of squad depth at the club.
There was no defensive midfielder on the pitch last night which allowed Chelsea to dictate the tempo and control huge parts of the game.
Arsenal had no real cutting edge - even when they had decent possession all they could muster were shots from distance which rarely troubled Chelsea's second-choice 'keeper Mark Schwarzer.
It was a useful exercise though as Nacho Monreal impressed - as did Thomas Vermaelen. A
fter analysing the game it is clear where the squad needs strengthening.
There is a need for a strong and combative defensive midfielder, a right back to push Bacary Sagna and eventually replace him.
One worrying position for the Gunners is up front where there is a clear reliance on Olivier Giroud.
Nicklas Bendtner started last night and was wholly ineffective.
However, the Gunners were missing potential centre-forwards Lukas Podolski and Theo Walcott who would have provided more food for thought for the Chelsea back-line.
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