German-American defensive midfielder who has played internationally for both Germany and the United States and has played professionally in Germany and England.
His youth career began with SV Bonames.
He scored his first international goal against Jamaica on June 19, 2011, playing for the United States.
He married Sarah Gerth in 2007. His father was a soldier in the United States Army, and his mother is German.
He has played alongside striker Jozy Altidore on the American national team.