Career
He has been the coach of the Telekom Baskets Bonn since November 2005. Koch played in Germany for Music Television 1846 Giessen, Steiner Bayreuth, and Turn- und Sportverein Bayer 04 Leverkusen. In 1996, he moved to Panathinaikos.
He was also a SuproLeague finalist (2001), and a Saporta Cup semifinalist (1998).
In 2001, he moved to Maroussi and was a Korać Cup semifinalist (2002). The next year he moved to Ionikos Newfoundland.
He played 140 times for Germany between 1985 and 1998.