Kammala jumla mai zuwa: Hamann, tsohon kyaftin din tsohuwar kungiyar 'yan wasan Jamus, ya fara buga wasan farko a ranar 22 ga Janairu, 2003, a wasan da suka yi da Macedonia. Ya taka leda a gasar cin kofin duniya ta 2003,
2007, 2009, da 2011 EuroBaskets; da kuma a 2006 da 2010 FIBA gasar cin kofin duniya.