At the U.S Indoor Tennis Championships, Germany's Sabine Lisicki will face Marina Erakovic of New Zealand in Saturday's final.

Lisicki, who is aiming to win a fourth WTA tour title, defeated Magdalena Rybarikova in the semifinals 7-5 7-5, while Erakovic defeated Switzerland's Stefanie Voegele 6-2 6-4.

Elsewhere, home favorite Jo-Wilfried Tsonga booked his place in the semifinals of the Marseille Open following a 4-6 6-3 7-6 win over Australia's Bernard Tomic.

"I felt I was playing better than him, but there were some holes in my game," Tsonga told reporters.

"I am happy to get through because it was very, very tense."

Tsonga, who will meet fellow countryman Gilles Simon in the last four, fought off five match points before claiming victory.

Simon overcame Argentina's Juan Martin del Potro, who won last week's Rotterdam Open, 6-4 6-3 with the second seed needing treatment on a thigh injury.

In the other semifinal, Russian qualifier Dmitry Tursonov will face top seed Tomas Berdych.

Tursunov saw off Gilles Muller of Luxembourg 7-6 1-6 7-5, while Czech star Berdych overcame Poland's Jerzy Janowicz 6-3 6-7 6-3.