Den Bosch, Netherlands - Belgium's Kim Clijsters advanced to the Unicef Open quarter-finals with an easy 6-2, 6-1 victory over Kateryna Bondarenko of Ukraine on Tuesday.
The win on grass a week ahead of Wimbledon was just Clijsters's second since returning from a three-month hip injury. She lost the opening set to Romina Oprandi on Sunday and struggled in the second before taking control of that match.
"Bondarenko's playing style suits me a lot better," she said.
Clijsters played more aggressively and saved the only break point she faced.
Among the men, top-seeded David Ferrer of Spain beat Pierre-Ludovic Duclos of Canada 6-4, 6-4 in a first-round match.
Results on Tuesday in the s-Hertogenbosch ATP/WTA grasscourt tournament (x denotes seeded player):
David Ferrer (ESP x1) bt Pierre-Ludovic Duclos (CAN) 6-4, 6-4
Lukasz Kubot (POL x8) bt Dudi Sela (ISR) 6-1, 6-2
Edouard Roger-Vasselin (FRA) bt Alex Bogomolov Jr. (RUS x7) 6-4, 6-4
Flavio Cipolla (ITA) bt Potito Starace (ITA) 4-2 - retired
Xavier Malisse (BEL) bt Viktor Troicki (SRB x2) 7-6 (7/4), 6-2
Daria Gavrilova (RUS) bt Yanina Wickmayer (BEL) 6-1, 6-2
Sofia Arvidsson (SWE) bt Jelena Jankovic (SRB x7) 6-2, 3-6, 6-4
Dominika Cibulkova (SVK x3) bt Shahar Peer (ISR) 6-2, 7-6 (7/5)
Nadia Petrova (RUS x8) bt Anabel Medina Garrigues (ESP) 7-5, 6-3
Urszula Radwanska (POL) bt Flavia Pennetta (ITA x4) 6-1, 6-1
Kim Clijsters (BEL) bt Kateryna Bondarenko (UKR) 6-2, 6-1