Twice former champion Maria Sharapova survived a second set blip to reach the semi-finals of the Edgbaston Classic with a 6-1 2-6 6-3 win over Belgium's Yanina Wickmayer.
After splitting the opening two sets, the Russian re-asserted her authority set up a last four meeting with China's Li Na.
Li beat Stefanie Voegele of Switzerland 6-3 7-6.
India's Sania Mirza will meet Magdalena Rybarikova of Slovakia in the other semi.
Mirza caused a minor upset when she navigated past Hungarian 16th seed Melinda Czink 6-1 7-6. Rybarikova defeated Polish teenager Urszula Radwanksa 6-3 6-3.
