Urszula Radwanska was among Sunday's first-round winners at the $235,000 Topshelf Open, a final tune-up for Wimnbledon.
The seventh-seeded Radwanska cruised past Olga Govortsova by a 6-2, 6-0 margin on the grass courts at Autotron Rosmalen.
Radwanska of Poland lost to Russian Nadia Petrova in last year's Den Bosch finale.
Michaella Krajicek of the Netherlands and Anabel Medina Garrigues of Spain were also victorious on Sunday. Krajicek beat Silvia Soler-Espinosa of Spain 7-5, 6-4 and Medina Garrigues handled Kiki Bertens of the Netherlands 6-1, 6-2.