Vinci upsets Wickmayer in Netherlands
Seventh-seeded Italian Vinci triumphed 6-4 6-4 over the Belgian.
Jelena Dokic of Australia beat Johanna Larsson of Sweden 7-6(2) 6-4, also in the last eight.
She will face Romina Oprandi of Italy in the semi-finals after she won against Kimiko Date-Krumm (Japan) 7-6(3) 6-4.
In the only game of the day in the men’s draw, fourth seed Ivan Dodig (Croatia) beat Teymuraz Gabashvili (Russia) 2-6 6-1 6-2 in the quarter-finals.