The game did not begin until 21:05 BST as thousands of visiting supporters arrived at the ground without tickets and then clashed with stewards inside the Emirates Stadium. But when it was finally sorted out the game lived up to his billing.
Cologne took the lead in spectacular fashion as Jhon Cordoba lobbed fellow Colombian David Ospina from 40 yards to make it 1 – 0 to the visitors. But substitute Sead Kolasinac equalised with a thumping volley to make it 1 – 1, before Sanchez struck, and Hector Bellerin then added the third from close range, as midfielder Jack Wilshere made his first appearance for the club since August 2016.
The game was closely matched in the first half in which arsenal were trailing by a goal to nil, but in the second half after some tactical reshuffling the game became 1 way traffic, and arsenal got the equaliser they deserved and went on to eventually win.
Wenger acknowledged that his team “became better balanced and better equipped” in a second-half that he described with some justification as “one way traffic.”
Arsenal rested most of his first team regulars with Danny Welbeck, Mesut Ozil, Alexandre Lacazette, Aaron Ramsey, Granit Xhaka, Laurent Koscielny and Petr Cech all given the night off ahead of a trip to Chelsea on Sunday, this was still team of considerable quality.
Arsene wenger also had some kind words for Alexis Sanchez who was on form, stretching the Cologne defence through out the night before he finally bagged a goal.
“I think Sanchez is still running after his best form. He is a fantastic football player but physically he has just come back. But he has it in his locker to do something special, which he did.
Alexis Sanchez picked up the Man of the Match award
Jhon Cordoba – 1
Sead Kolasinac – 1
Alexis Sanchez – 1
Hector Bellerin – 1