Wojciech Szczesny is delighted with the form of Arsenal's defence this season.
The Gunners will set out to return to the top of the table when they travel to Aston Villa on tonight.
"I prefer to play behind the same back four because we have got a very good understanding, but you have to give credit to the players that have come in, when everyone does as well as they been doing recently it really doesn't matter," Szczesny said.
"Thomas Vermaelen has done really well when he has been in the team as have the others, like Nacho Monreal and Carl Jenkinson.
"As long as the players coming in are in good shape and bring in the same principles into the game, it doesn't make much difference.
"Hopefully they can maintain that form because the amount of clean sheets we have kept lately has made me very happy."
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