Racing PositionsCastro signs new Dortmund contract8YStephan UersfeldAubameyang's double paces Dortmund8YStefan BuczkoReus, Dortmund squander lead at Mainz8YStefan BuczkoDembele lone positive vs. Augsburg8YStefan BuczkoReus saves Dortmund late8YStefan BuczkoReus, Aubameyang fuel Dortmund8YStefan BuczkoCastro leads BVB past Hertha9YStefan BuczkoCastro joins Dortmund10YESPN staffDortmund set to pay Castro clause10YStephan UersfeldCastro unsure of future amid BVB links10YStephan Uersfeld