GARMISCH-PARTENKIRCHEN, Germany - Julia Mancuso won a super-G on Sunday for her first World Cup victory of the season, while fellow American Lindsey Vonn skied off the course and did not finish.

Vonn captured her 50th World Cup win in a downhill on the same slope a day earlier. But she was forced to wait for her start for about three minutes while officials fixed a gate and Vonn could not hold her line on Sunday after hitting a bump midway down the icy piste. She was looking for a record 18th super-G win.

Mancuso produced a clean run in freezing conditions, with bright sunlight and deep shadows alternating on the Kandahar course and making visibility poor. She won on the same slope where she clinched the super-G silver medal at last year's World Championship.

"I thought when I crossed the finish line, 'if that wasn't good enough, then I don't know what is'," Mancuso said. "I didn't feel like I had the best run, but I kept my skies stable the whole way."

Vonn was not the only one to ski off the course. Four of the first six starters also failed to finish and several others joined the group, including Tina Maze of Slovenia, one of Vonn's challengers for the overall title. Vonn still has a massive lead.

Vonn quickly left the finish area and could not be reached for comment.

Anna Fenninger of Austria was second, 0.13 seconds behind, and Tina Weirather of Liechtenstein was third, 0.45 back.

Weirather was also third in Saturday's downhill while Maria Hoefl-Riesch of Germany, last season's overall World Cup champion, finished fourth for the second straight day.