Top-seeded Nikolay Davydenko was knocked out of the Dutch Open tennis tournament in the first round in Amersfoort on Tuesday, losing 4-6, 6-1, 6-1 to Florent Serra.

Serra takes on Dutch player Thiemo de Bakker in the second round. Two other Dutch players, Raemon Sluiter and Robin Haase, are also through.
Second-seeded Mikhail Youzhny, seeking his second title of the season in the Netherlands after winning the ABN Amro tournament in Rotterdam earlier this year, is also through to round two.