Munich - Arsene Wenger slammed Arsenal's "extremely poor" defensive display at Bayern Munich as their record 5-1 defeat left them with just a slender chance of progressing in the Champions League.
Thomas Mueller scored twice on Wednesday while Robert Lewandowski, David Alaba and Arjen Robben were also on target as Pep Guardiola's Bayern emphatically avenged their 2-0 defeat at the Emirates Stadium a fortnight ago.
This was Arsenal's joint heaviest away defeat in Europe, equalling the 4-0 drubbing at AC Milan in the last 16 in February 2012.
France striker Olivier Giroud scored Arsenal's consolation goal with 20 minutes left, but with two games to go, Arsenal have only a mathematical chance of reaching the knock-out phase after Dinamo Zagreb's 2-1 defeat at Olympiakos.
The Gunners have three points along with Dinamo, while Olympiakos and Bayern both have nine with the Germans top of Group F on goal difference.
It means Arsenal must win their final two matches at home to Zagreb and away to Olympiakos, plus hope Bayern beat the Greek side at the Allianz Arena in a fortnight to progress.
"You have to give credit to Bayern for their quality, but we made life easy for them and we were extremely poor defensively. We weren't at the races," admitted Wenger.
"We did well going forward, we created chances, but with a defensive display like that, you are going nowhere."