Steve Bulpett of the Boston Herald reports that Randy Brown's career may be in jeopardy.  Brown injured his right groin last Tuesday and no one is thinking he'll be ready to play again during the preseason. And because he is 33 and this is the same injury that kept him sidelined at both the beginning and end of last season, Brown may have to face some career questions.  Brown said, "I'm just frustrated because I rehabbed all summer and then the day I decided I needed to go and play basketball, it happened again.  I'm frustrated because of all the work I put in trying to get it right."