The Champions League Group Stage draw pitted Arsenal with Marseille, Olympiacos and Borussia Dortmund.
The draw signals the return of Euro Watch, our weekly check on the progress of Arsenal's European opponents in their domestic leagues.

Borussia Dortmund 1-2 Hertha BSC
Saturday, September 10
Borussia Dortmund warmed up for Tuesday’s Champions League visit of Arsenal with a 2-1 home defeat against Hertha Berlin at the weekend. Robert Lewandowski’s 88th-minute goal for the home side proved a mere consolation as Jurgen Klopp’s side dropped to 11th in the Bundesliga.

Marseille 0-1 Rennes
Saturday, September 10
Jires Kembo-Ekoko’s 76th-minute strike proved decisive as Marseille went down at home to Rennes in their Ligue 1 game at the weekend. Arsenal travel to the Stade Velodrome on October 19 for their third Group F match.

Olympiacos Volou P-P Olympiacos Piraeus
Friday, September 9
Olympiacos are yet to play this season.