Facts: - clubs: tsv fc bayern munich 1 . fc koln spvgg unterhaching sv 1860 darmstadt 98 ssv jahn regensburg munchen spvgg starnberg fc starnberg spvgg unterhaching - caps: 1 51 0 31 110 47 69 - position: defender - managerclubs: ssv -lrb- assistant -rrb- jahn regensburg -lrb- playing assistant -rrb- spvgg weiden - years: 1987 1993 -- 1997 1997 1997 -- 1999 1999 -- 2004 -- 2004 -- 2006 2006 -- 2009 1990 1991 -- 1992 1992 -- 1993 - youthclubs: tsv 1860 munchen - youthyears: 1987 -- 1990 - medaltemplates: bayern munich - birth date: 10 october 1971 - birth place: west berlin , west germany - manageryears: 2008 -- 2009 2010 - goals: 0 2 0 0 6 3 13 Based on these bullet points, write a short biography describing the life of dennis grassow .
dennis grassow -lrb- born 10 october 1971 in berlin -rrb- is a retired german footballer who played as a defender .