Friday 10 October 2014 22:52, UK
Seventh seed Karolina Pliskova advanced to the semi-finals of the Generali Ladies in Linz with a 6-4 6-4 victory over Madison Brengle.
World No 30 Pliskova needed an hour and 18 minutes to see off her American opponent, who was unable to get the upper hand in a tight contest.
Elsehwere in the quarter-finals, Anna-Lena Friedsam continued her fine run with a battling 4-6 6-2 6-3 victory over Stefanie Voegele.
Friedsam progressed to the semi-finals of a WTA event for the first time, where she will face Pliskova.
Italian Karin Knapp defeated Bulgarian Tsvetana Pironkova 6-4 4-6 6-4 and will now meet compatriot Camila Giorgi, who saw off Marina Erakovic of New Zealand 6-3 7-5.
Top seeds Eugenie Bouchard and Ana Ivanovic have both withdrawn from the tournament early because of injury.
