Stanislas Wawrinka has been dumped out of the Swiss Indoors at the hands of Russia's Nikolay Davydenko.
The Swiss number two struggled with his first serve in the opening set, which he dropped on a tie-break.
It was much the same story in the second set, as Davydenko again prevailed on a tie-break to reach the second round.
He will now face either Henri Laaksonen or Paul-Henri Mathieu.
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