In addition to Kraus, Ophelie David of France won the women's competition and the women's World Cup ski cross title.
Now that the season has come to an end, Shepherd is eager to begin training as he looks ahead to the 2010 Olympics where ski cross will make its debut.
"All in all it's been a really long season. Casey can now get into his workout program quickly and start focusing on the big year next year," Shepherd said. "We're going to figure out what plan of attack will be the best thing to do."
2009 FIS FREESTYLE WORLD CUP
La Plagne, France - March 20, 2009
1. Ophelie David, France
2. Kelsey Serwa, Canada
3. Emilie Serain, Switzerland
4. Alexandra Grauvogl, Germany
5. Aleisha Cline, Canada
photos Janos Schmidt