Jelena Jankovic of Serbia hits the ball during the women's singles first-round match against Laura Siegemund of Germany at the Australian Open Tennis Championships in Melbourne, Australia, Jan. 16, 2017. Jelena Jankovic won 2-1. (Xinhua/Bai Xue)
Jelena Jankovic of Serbia hits the ball during the women's singles first-round match against Laura Siegemund of Germany at the Australian Open Tennis Championships in Melbourne, Australia, Jan. 16, 2017. Jelena Jankovic won 2-1. (Xinhua/Bai Xue)