Arsenal's German defender Per Mertesacker and Dortmund's Polish striker Robert Lewandowski vie for the ball during the UEFA Champions League group F football match Borussia Dortmund vs Arsenal London in Dortmund, western Germany on November 6, 2013. Arsenal won the match 0-1. AFP PHOTO / PATRIK STOLLARZ (Photo credit should read PATRIK STOLLARZ/AFP/Getty Images)