Top seed Kiki Bertens to play Coco Gauff in Linz quarterfinals

Netherlands' Kiki Bertens returns the ball during the WTA-Upper Austria Ladies tennis match in Linz, Austria. Getty Images

Top seed Kiki Bertens will face American teenager Coco Gauff in the Linz Open quarterfinals on Friday.

The Dutchwoman beat Alison Van Uytvanck of Belgium 4-6, 6-3, 6-3, on Thursday, while no. 8 seed Ekaterina Alexandrova got through to the quarterfinals after beating Germany's Laura Siegemund in Austria.

Ekaterina Alexandrova, 24, edged Siegemund 7-6(1), 2-6, 6-4 in a closely fought contest that saw five broken serves during a tense final set.

The Russian will be looking to go one better than her last Linz Open appearance, having finished runner-up to Camila Giorgi of Italy in last year's tournament.

Alexandrova will face Kristina Mladenovic of France, after she beat no. 4 seed Donna Vekic of Croatia 3-6, 6-1, 6-2 in the second round.

In the other half of the draw, compatriot No. 9 seed Anastasia Pavlyuchenkova was upset by Viktoria Kuzmova of Slovakia 6-2, 2-6, 6-4.