 After playing for SC Freiburg and a last season for Borussia Mönchengladbach, he ended his player career in May 2000.He played for the German national team from 1984 to 1992 in a total of 19 games and won a runners-up medal in UEFA Euro 1992.Frontzeck started as assistant coach of Borussia Mönchengladbach from 2000 to 2003 and for Hannover 96 from 2004 to 2005.