Highlights of 2019 Australian Open day 9

Petra Kvitova of the Czech Republic hits a return during the women's singles Quarterfinals match between Petra Kvitova of the Czech Republic and Ashleigh Barty of Australia at the 2019 Australian Open in Melbourne, Australia, on Jan. 22, 2019. Petra Kvitova won 2-0. (Xinhua/Bai Xuefei)