LEVERKUSEN, GERMANY - JANUARY 31: Mats Hummels of Dortmund and Stefan Kiessling of Leverkusen compete for the ball during the Bundesliga match between Bayer 04 Leverkusen and Borussia Dortmund at BayArena on January 31, 2015 in Leverkusen, Germany. (Photo by Matthias Hangst/Bongarts/Getty Images)
