Berlin Open: Siniakova advances to last eight

Qualifier Katerina Siniakova reached the quarter-finals of the Berlin Open by winning against Chinese Qinwen Zheng, the No 6 seed, 6-4, 6-4 at Rot-Weiss Tennis Club on Thursday afternoon.

Siniakova, ranked No 30, will play the winner of the match between American Jessica Pegula, the No 4 seed, and Croat wildcard Donna Vekic next.

Katerina Siniakova defeated American Emma Navarro (6-4, 6-3) in the previous round of the Berlin tournament.

In the previous round of the Berlin tournament, Zheng, ranked No 8, won against Japanese wildcard Naomi Osaka (6-4, 3-6, 6-3).

Berlin WTA 500, other last 16 results (Rot-Weiss Tennis Club, grass, USD 922.573, most recent results first):

• Daria Kasatkina vs. Aryna Sabalenka
• Linda Noskova vs. Ons Jabeur
• Jessica Pegula vs. Donna Vekic
• Coco Gauff vs. Ekaterina Alexandrova
• Anna Kalinskaya beat Marketa Vondrousova (5): 5-5 ret.
• Elena Rybakina (3) beat Veronika Kudermetova (Q): 6-4, 7-5
• Victoria Azarenka beat Zeynep Sonmez (Q): 6-3, 6-3