Danny Welbeck scored the vital goal on Tuesday night but it was arguably Calum Chambers and Rob Holding who held us together.
Their centre-back partnership was rock solid against a West Ham attack that first featured the trickiness of Javier Hernandez and then the aggression of Andy Carroll.
“It’s very good when you have that quality at that age,” Arsene Wenger told Arsenal.com. “When you give them this kind of opposition and it gives them credit and makes everybody think there is something there that you can work with to reinforce that quality.
“Chambers is very comfortable [at centre back], he is calm on the ball, he wants the ball and Rob as well.