Zhang Shuai (1st R) of China and Samantha Stosur (2nd R) of Australia sign autographs after the women's doubles quarterfinal match against Barbora Krejcikova and Katerina Siniakova of the Czech Republic at 2019 Australian Open in Melbourne, Australia, on Jan. 22, 2019. Zhang Shuai and Samantha Stosur won 2-0. (Xinhua/Bai Xue)