In the quarterfinal match played in the evening session of the 11th day of the tournament held in the city of Melbourne and lasted 2 hours and 20 minutes, the 21-year-old Chinese racket, the number 12 seed in women's singles, defeated her 25-year-old Russian rival, the world number 75, 2-1 with sets of 6-7, 6-3 and 6-1.
Zheng will face 23-year-old Ukrainian racket Dayana Yastremska, ranked 93rd in women's singles, in the semifinals.