The Swedish snowboard star, who has already been selected for the Olympics in Beijing, finished with 134.00 points.
It was a Swiss home victory through Jonas Bösiger, with 162.00 points, while the Finn Rene Rinnekangas finished second with 141.00.
The final Swede of the final, Niklas Mattsson, finished eighth at 86.25.
From the archive: Sven Thorgren has built a training hill - in his backyard
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Sven Thorgren has built a training hill - in his own backyard