Something about it resetting the mind-set of players too, perhaps. The formation alone doesn't explain how they were suddenly winning balls, 'snapping into tackles', as they say, and roughing opponents up.
Right. It's the way a manager can show them what his priorities are this week. I doubt Wenger would even mind the goal Manchester City scored too much.
"Plenty of strikers can score goals," he said, gesturing to the famous old stands casting shadows around us.
"But a lot have found it difficult wearing the number 9 shirt for The Arsenal."