Defender who joined Borussia Dortmund in 2009 and became a member of the German national team in 2010.
He debuted professionally for the Rot Weiss Ahlen B squad in 2006.
He helped Borussia Dortmund win two straight Bundesliga titles in 2011 and 2012.
He was born in Dortmund, West Germany.
He became teammates with Thomas Muller on the German national team.