DORTMUND, GERMANY - SEPTEMBER 16:  Aaron Ramsey (R) of Arsenal and Sokratis Papastathopoulos (L) of Borussia Dortmund  battle for the ball during the UEFA Champions League Group D match between Borussia Dortmund and Arsenal at Signal Iduna Park on September 16, 2014 in Dortmund, Germany.  (Photo by Friedemann Vogel/Bongarts/Getty Images)