STUTTGART, GERMANY - FEBRUARY 20: Goalkeeper Roman Weidenfeller of Dortmund discusses with referee Deniz Aytekin after a penalty foul by Nuri Sahin during the Bundesliga match between VfB Stuttgart and Borussia Dortmund at Mercedes-Benz Arena on February 20, 2015 in Stuttgart, Germany. (Photo by Alex Grimm/Bongarts/Getty Images)
