At his first World Ski Championships in 2001 in St. Anton am Arlberg , he surprisingly finished third behind the two Austrians Hannes Trinkl and Hermann Maier in downhill skiing and won the bronze medal. Then he was able to confirm his achievements with two second places in downhill runs in Norway. He was sidelined for two years because of a serious knee injury that he suffered in the fall of the same year. He celebrated his greatest success at the 2005 World Ski Championships in Bormio , when he won the gold medal in the team competition and also achieved sixth place in the Super-G and 12th place in the downhill. He was German champion six times in the downhill (2), slalom (1) and Super-G (3) disciplines.