Arsenal boss Mikel Arteta is sure to be immensely proud with the way his players dug in and secured a 2-0 win away at in-form Newcastle.
While the Gunners answered some key questions with their performance, Arteta may have learned some key lessons of his own, as a number of Arsenal's fringe players contributed with stellar performances to help get their team over the line inside the intimidating cauldron of noise that is St. James' Park.
A Martin Odegaard strike from distance handed Arsenal the lead at the interval, before a Fabian Schar own goal around 20 minutes from time all but ended the game as a contest as the Gunners managed to take the sting out of the tie and sit on their lead.