Arsenal's defence has come in for quite a battering in recent weeks, from opposing teams, pundits and fans.
With Gunners boss Arsene Wenger persevering with Nacho Monreal as a makeshift centre-back Arsenal suffered some ominous losses, meaning the return of Laurent Koscielny was timely to say the least.
The French international had missed seven games with an Achilles tendon injury before being named on the bench for Arsenal's Champions League match against Borussia Dortmund last week.
But he was finally back on the pitch against West Brom, putting in a display - for the most part at least - that suggested Arsenal's back-line is about to become a whole lot tighter.
With Monreal initially playing in his more natural position and Koscielny partnering Per Mertesacker in the centre, Arsenal kept West Brom at bay, limiting them to just a single shot on target, and earning a much needed clean-sheet after recent defeats to Manchester United and Swansea City and a bizarre capitulation against Anderlecht.
After the match we took to Twitter to see what Arsenal fans thought of their defender's performance and below you can read a selection of what we found:
Koscielny has me all calm and serene watching Arsenal.... Everybody needs a Koscielny in their lives.— Alexis is Royalty (@DekaDMichael11) November 29, 2014
Berahino's one of the fastest players in the league and Koscielny's beating him in every single footrace— JB (@gunnerpunner) November 29, 2014
So great to have Koscielny back, defense is much more organised with him at the back— Nasseem (@Nass_AFC) November 29, 2014
It's great to have Koscielny back to play everyone on side #WBAvAFC— Nathan Blake (@NathanBlake1234) November 29, 2014
This is very positive. Team has a better balance with Giroud & Koscielny— Mostafa (@SolerMostafa) November 29, 2014
Koscielny straight back into his game. Fantastic so far. #afc— Immortal Gooner (@Immortal_Gooner) November 29, 2014
It's really no surprise that our defending has been superb. What a difference Koscielny makes.— Diarmuid (@DiarmuidAFC) November 29, 2014