In pics: Day 1 of 2019 Australian Open

Maria Sakkari of Greece hits a return during women's single's first round match between Jelena Ostapenko of Latvia and Maria Sakkari of Greece at the 2019 Australian Open in Melbourne, Australia, Jan. 14, 2019. Jelena Ostapenko lost 1-2. (Xinhua/Bai Xuefei)