Den Bosch, The Netherlands (SportsNetwork.com) - Fifth-seeded Andrea Petkovic was among Sunday's first-round winners at the Topshelf Open, a final grass- court Wimbledon tune-up.
The German posted a 6-2, 6-4 win over Belgian Yanina Wickmayer in a match between former finalists.
Slovakian Magdalena Rybarikova and Austrian Yvonne Meusburger also advanced. Rybarikova beat Belgian wild card An-Sophie Mestach 6-4, 6-4, while Meusburger topped Estonian Kaia Kanepi 6-1, 6-2 at Autotron Rosmalen.
French Open runner-up Simona Halep beat Wimbledon semifinalist Kirsten Flipkens in last year's finale in Den Bosch.
