Zheng Qinwen triumphed over Donna Vekic in a thrilling rematch of their Olympic final, winning 7-6 (2), 4-6, 6-2 to advance to the U.S. Open quarterfinals at 2:15 a.m., marking the latest finish in the history of women's matches at the tournament. The match lasted 2 hours and 50 minutes, showcasing Zheng's resilience on hard courts, a stark contrast to her previous victory over Vekic on clay in Paris. Despite losing the second set, Zheng's early breaks in the final set secured her place against Aryna Sabalenka, the No. 2 seed, in the next round. Vekic, who had reached the semifinals at Wimbledon, expressed disappointment over her missed opportunities during the match. Zheng, reflecting on the challenge of switching surfaces post-Olympics, emphasized her determination to perform well against Sabalenka, stating she looks forward to the matchup. This victory solidifies Zheng's position as a formidable competitor in the ongoing tournament.