Marta Kostyuk took advantage of Coco Gauff’s uneven performance Tuesday in Doha to capture her biggest hard-court win to date.
The former world No. 2 showed vintage form to upset Zheng, who was playing her first match since the Australian Open last month.
Jasmine Paolini and Elena Rybakina both advanced to the Qatar TotalEnergies Open third round with straight-sets victories.