Stieglitz won the vacant WBC International super-middleweight title on December 9, 2008 in Sölden (Austria) to previously unbeaten Lukas Wilaschek.
Stieglitz vandt den ledige WBC Internationale supermellemvægttitel den 9. december 2008 i Solden (Østrig) fra tidligere ubesejrede Lukas Wilaschek.