After reaching her third final in the space of a month, Viktorija Golubic is poised to take on Jasmine Paolini on Sunday.
Fifth seed Viktorija Golubic is through to the L'Open 35 de Saint-Malo semi-finals, but number two seed Rebecca Peterson is out.
In a rematch of the Stuttgart Open final, Aryna Sabalenka is to face top seed Ash Barty in the Madrid Open showpiece on Saturday.
Paula Badosa defeated Ash Barty in Charleston last month, but the world number one came out on top in the Spanish capital.
World number one Ashleigh Barty remains unstoppable on the red clay, but next faces the only woman to beat her since February.
Elise Mertens bangkit sebanyak dua kali untuk mengatasi Simona Halep bagi mencongak perhitungan dengan bekas beregu gandingannya, Aryna Sabalenka, dalam suku akhir Kejohanan Tenis Terbuka Madrid.
Two-time Madrid Open champion Simona Halep failed to capitalise on a commanding position as she was eliminated by Elise Mertens.
Ash Barty melebarkan rekod kemenangannya di gelanggang tanah liat kepada 14 perlawanan selepas menewaskan Iga Swiatek dengan keputusan straight-set dalam Kejohanan Tenis Terbuka Madrid malam tadi.
Ash Barty will face Petra Kvitova in Madrid after defeating Iga Swiatek to extend her impressive record against top-10 opponents.
Second seed Naomi Osaka was eliminated from the Madrid Open by Karolina Muchova on Sunday and vowed to learn from the defeat.