Wojciech Szczesny believes a settled back four has been key to Arsenal's outstanding defensive form.
Sunday's 2-0 win over Crystal Palace was Arsenal's 18th clean sheet of the season and their 10th in their last 11 games at Emirates Stadium.
The Gunners face two big tests against Liverpool and Manchester United in the next week or so and the Polish keeper is confident the defence can maintain their form.
"I never played with the same back four for more than two or three games [in a row]"
"We've been together for much longer and we understand each other's game now," Szczesny said. "Over the last couple of seasons we had less luck with injuries - I never played with the same back four for more than two or three games [in a row].
"Now we play with the same back four, sometimes we rotate the full-backs but in general we stay with the same defence.
"Every single game in the Premier League is difficult at the moment. You don't have any weaker teams. So it's a difficult run but we're looking forward to it. We look at it as a chance to create an even bigger gap with the teams behind us.
"I think every player looks forward to the games against big opponents and world-class players. So it's very exciting and I hope we can show people what we're made of."
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