DORTMUND, GERMANY - FEBRUARY 28: (L-R) Dennis Aogo of Schalke and Shinji Kagawa of Dortmund battle for a header during the Bundesliga match between Borussia Dortmund and FC Schalke 04 at Signal Iduna Park on February 28, 2015 in Dortmund, Germany. (Photo by Sascha Steinbach/Getty Images for MAN)
