Igor Sijsling downs Jarkko Nieminen

BANGKOK -- Igor Sijsling of the Netherlands advanced to the second round of the Thailand Open by beating seventh-seeded Jarkko Nieminen of Finland 6-3, 7-6 (2) on Monday.

The 75th-ranked Sijsling will next face countryman Robin Haase, who beat Daniel Gimeno-Traver of Spain 6-2, 6-4 at Impact Arena.

The top four seeds -- Tomas Berdych, defending champion Richard Gasquet, Milos Raonic and Gilles Simon -- all had byes in the first round.