Arsenal boss Arsene Wenger admits he's been embarrassed by their poor disciplinary record in the past.
He said: "I was embarrassed when it happened sometimes, when we did not behave well.
"I was not embarrassed when I felt that the player, after much provocation, responded overboard.
"There was a young Patrick Vieira, when he was really a young lion, and being intimidated easily and he was annoyed because he got tackled five times from behind.
"I can understand - but when we did not behave well it was disappointing."