The pressure was on Arsene Wenger’s side after losing their opening two group games away to Dinamo Zagreb and at home to Olympiacos.
However, the north London side injected some fresh belief into their European campaign with a brilliant win over the Bundesliga champions in north London.
After a goalless first half, substitute Olivier Giroud bundled home in the 77th minute after goalkeeper Manuel Neuer missed Santi Cazorla’s free-kick.
And Mesut Ozil secured the win when the Germany international turned in Hector Bellerin’s cross in stoppage time.
Arsenal’s huge win inevitably prompted plenty of activity on Twitter – and here are some of our favourite post-match updates.
Vamos por más arsenal ” src=”https://s.w.org/images/core/emoji/72×72/1f4aa.png”>🏽 ahora Pensar en el partido del sábado ” src=”https://s.w.org/images/core/emoji/72×72/26bd.png”> We are going for more arsenal ” src=”https://s.w.org/images/core/emoji/72×72/1f4aa.png”>🏽… https://t.co/z7JDKigVsQ
— Alexis Sánchez (@Alexis_Sanchez) October 20, 2015
— Héctor Bellerín (@HectorBellerin) October 20, 2015
Good day for our teams in Europe. Let's hope The Premier League teams have turned the corner after a shocking start. https://t.co/NJfvXn6Ltz
— michael owen (@themichaelowen) October 20, 2015
Arsenal the only team to lose to Zagreb and olympiakos and then go on to beat bayern This team going to kill me
— I AM FRIMPONG (@IAMFRIMPONG26) October 20, 2015
— Mesut Özil (@MesutOzil1088) October 20, 2015
— Ruud Gullit (@GullitR) October 20, 2015
Great result for Arsenal – didn't see that coming. You can see why their fans get frustrated when lose to that Greek mob then beat Bayern!
— Jimmy Bullard (@jimmybullard) October 20, 2015
If #Arsenal continue to defend like that, this season could turn out quite nicely
— Alan Smith (@9smudge) October 20, 2015
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