Arsenal get Dortmund lesson

Arsenal endured a chastening start to their Champions League group campaign after being overwhelmed by Borussia Dortmund at Signal Iduna Park.
Ciro Immobile and Pierre-Emerick Aubameyang struck either side of half-time and the German club would have been more emphatic victors than 2-0 but for the reflexes of Wojciech Szczesny and their own wastefulness.