Sabine Lisicki and Marina Erakovic will meet in the final of the US National Indoor Tennis Championships in Memphis after a pair of straight sets victories.
Germany’s Lisicki, seeded third and ranked number 40 in the world, will start as favourite ahead of New Zealand’s Erakovic, who is rated number 71 on the WTA.
Lisicki defeated seventh seed Magdalena Rybarikova 7-5 7-5 to book her place in the showpiece.
Erakovic, who is seeking her first tour title, beat Switzerland’s Stefanie Voegele 6-2 6-4.
In the men’s competition, top seed Marin Cilic was ousted at the quarter-final stage by Japan’s Kei Nishikori.
The Croatian was outplayed as he was beaten 6-4 6-2 by Nishikori, the fifth seed.
Nishikori faces Australian Marinko Matosevic in the semi-finals after he defeated seventh seed Alexandr Dolgopolov in a hard-fought (6)6-7 6-2 6-4 result.
The other semi sees Feliciano Lopez meet Denis Istomin after both men beat American opponents.
Wild card Jack Sock could not match Lopez, a 6-4 6-3 winner, while Uzbek Istomin saw off Russell 6-4 7-6.