Fourth seed Victoria Azarenka takes on Czech left-hander Petra Kvitova for a place in the final.
Former champion Maria Sharapova faces big-serving wildcard Sabine Lisicki in the semi-finals.
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Fourth seed Victoria Azarenka takes on Czech left-hander Petra Kvitova for a place in the final.
Former champion Maria Sharapova faces big-serving wildcard Sabine Lisicki in the semi-finals.