The Premier League leaders face tests against the likes of Manchester City and Chelsea over December, but the centre-back remains confident of their ability to conquer those tests
Arsene Wenger's side have been in superb form this season and top the table with 35 points from 15 matches but will face a stern test of their title credentials in December, with Saturday's visit to Manchester City followed by a home fixture against Chelsea.
|2/1||Arsenal are 2/1 with BetVictor to win the Premier League|
"I think that was the toughest game we have been through the whole season," the Germany international told Arsenal's official website. "They pressured us high up, all the way through from the start until the end.
"We couldn't play that much and, in the second half, everything was possible on both sides, with chances here and there, so I think it was a fair result.
"We have tough games coming up over the next week and over the Christmas period. We just want to go one game at a time.
"We are really relaxed, we don't have to respond to anyone. We just have to do our job every single second of the game. That is our target, nothing else."