By Chris Harris

Wojciech Szczesny can "feel the improvement" in Arsenal's defence and he puts it down to a major team effort.

Arsène Wenger's side conceded 17 goals in their first nine games this season but have let in just 10 in their last 11. They have been particularly tight in Europe, shipping two goals in four group games.

Arsenal go into Wednesday's clash with Borussia Dortmund on the back of two Champions League clean sheets against Marseille and Szczesny has enjoyed a front-row view of his team's defensive growth.

"I can feel the improvement in defence," he said. "I think it has been the defensive work from the whole team starting with the strikers, midfielders, defenders and myself.

"I think we have done very well defensively. We got two clean sheets in the last two games against Marseille which is a fantastic achievement because they are a quality side. That gives us a lot of confidence going into the game on Wednesday and hopefully we can just keep another clean sheet.

"We work together on the training ground and it seems to be working during the games," he added. "We are much more confident, we concede less goals and I hope we can keep it going."

Szczesny has taken to top-level football like a duck to water and his tendency to bellow out instructions to his team-mates has helped with organisation and communication. He thinks he has a big role to play.

"Being vocal is my job, my job as a keeper is to talk to my defenders," he said. "I feel like they trust in me, and when I say something they listen. I am just doing my job."

Copyright 2014 The Arsenal Football Club plc. Permission to use quotations from this article is granted subject to appropriate credit being given to www.arsenal.com as the source 22 Nov 2011