Elena Rybakina defeated Zheng Qinwen 3-6, 6-1, 6-4 to reach the US Open semi-finals and secure her rise to world No. 1. She will face Coco Gauff, who saved two match points in a 2-6, 7-6, 6-2 win over Mirra Andreeva. Aryna Sabalenka will play Jessica Pegula in the other semi-final, marking the first time since 1975 that the top four women have reached the last four at the US Open.
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