Arsenal v. Borussia Dortmund, which has to be the most irresistible Champions League fixture so far this season.
Both sides play incredible football – Arsenal with their intelligent, calculated build-up play and Dortmund with their high octane counter-attacking flair – meaning individual player match-ups will be crucial to determining the outcome.
Here are three key battles to keep a close eye on.
Robert Lewandowski v. Laurent Koscielny
Mikel Arteta v. Henrikh Mkhitaryan
Mesut Ozil v. Nuri Sahin
Source: Mike Prindiville, NBC Sports