Seeing double 💪💪 Donna Vekic and Petra Kvitova win quarter-final and semi-final matches in the same day in Berlin 🥵 Vekic d. Elina Avanesyan 6-2 7-6(0) and Maria Sakkari 6-4 7-6(8) Kvitova d. Caroline Garcia 6-4 7-6(3) and Ekaterina Alexandrova 6-3 6-4 @bett1open | @WTA t.co/qmpCHSmbu7