Alison Riske (R) of the United States and Ons Jabeur of Tunisia compete during the women's doubles semifinal against Anna-Lena Groenefeld of Germany and Demi Schuurs of the Netherlands at the 2019 WTA Qatar Open in Doha, Qatar, Feb. 15, 2019. Alison Riske/Ons Jabeur lost 0-2. (Xinhua/Nikku)