Mav defensive coordinator Rolando Blackman has been hired as an assistant coach for Germany's national team, which stars Dirk Nowitzki, reports Dallas Morning News' Marc Stein.  Possibly joining them is Shawn Bradley.  Bradley was born in Germany and is therefore eligible for citizenship and, hence, for the German national team.  Bradley would like to play in the Olympics and playing for Germany may be a more realistic route than to play for USA.