The 62-year-old believes the defensive approach of visiting teams to the Emirates are to blame for the Gunners' failure to win their last two home matches against Chelsea and Wigan
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A valiant defensive display earned Wigan a 2-1 win at the Emirates Stadium last Monday night, whilst Chelsea came away with a point on Saturday afternoon after a goalless draw against the Gunners.
A return of one point from a possible six has seen fourth-placed Newcastle close the gap on the north London side to just three points, with Alan Pardew’s side having played one game less.
Wenger told the club’s official website: “I feel that the teams came here and defended very well.
“It makes the game difficult for us and that is what happened.
“This week we were a bit less sharp than the weeks before but in those weeks we still finished strongly in matches.
“Against Manchester City [we finished strongly so] you cannot say from one week to the next that you are tired.”
Arsenal have managed, on average, two goals a game at the Emirates this season - with their final home game of the campaign against newly-promoted Norwich City scheduled for May 5.