#1 Koscienly and Sokratis' defensive wall
Arsenal has managed to keep only four clean sheets all season, against 20th place Huddersfield, 7th placed Watford and 11th placed Everton. Last night, I was surprised to see Arsenal play like an organised and confident defensive side. Laurent Koscielny, despite being sidelined for more than a season, played a very crucial part in yesterday's win and I feel he has won back the confidence of the coach.
The Arsenal board were right in keeping him at the club, and he has shown that he still has a lot left in him to provide.
On the other hand, we have the Greek wall Sokratis. One of Unai Emery's signings, though Sokratis took a bit time to settle at Arsenal, he has played considerably well for Arsenal. Inconsistency has been a point in Arsenal's defenders, but this win should be a new start for Arsenal. They have conceded 32 goals in just 21 games, and this a point of major concern for Emery and co.
Seems like this would be the preferred formation and lineup for every league game. Sokratis and Koscienly should start every game from now on, as Mustafi has lacked the quality required. Will this be a new start for Arsenal in their fight for a top 4 finish?