Highlights of women's singles second round matches at Dubai Duty Free Tennis WTA Championships

Petra Kvitova serves during the women's singles second round match between Katerina Siniakova and Petra Kvitova of the Czech Republic at Dubai Duty Free Tennis WTA Championships 2019 in Dubai, the United Arab Emirates, Feb. 19, 2019. Petra Kvitova won 2-1. (Xinhua/Mahmoud Khaled)