Pierre Emerick-Aubameyang piles on the misery for Arsenal

Arsene Wenger probably sent his team out for the second half with a revised gameplan ... and it's already gone completely to crap. His defense and midfield got absolutely demolished by Pierre-Emerick Aubameyang and Kevin Großkreutz on this goal, leading to PEA applying the finish. We're not really sure what Wojciech Szczesny is going for here either. Borussia Dortmund lead Arsenal, 2-0.