Elena Rybakina defeated Naomi Osaka 6-1, 6-4 at the US Open, moving into the quarterfinals. A win against Zheng Qinwen will secure her the top spot in the WTA rankings, replacing Aryna Sabalenka. Zheng, who recently overcame a 5-0 deficit to defeat Iga Swiatek, is poised to challenge Rybakina in the next round.