北京时间9月4日中午，2024美国网球公开赛结束正赛第九日争夺。当日共进行了2场女单1/4决赛和4场女双1/4决赛。
2024美网公开赛正赛于当地时间8月26日-9月8日在比利简金国家网球中心举行。第九比赛日进行的是女单下半区2场1/4决赛和4场女双1/4决赛。
在首场女单1/4决赛中，13号种子、美国本土选手纳瓦罗用时1小时12分钟，在第二盘1-5之后连胜6局，最终以6-2/7-5横扫26号种子、西班牙选手巴多萨，职业生涯首次跻身大满贯4强。在美网打进首个大满贯4强后，纳瓦罗的PIF WTA世界排名也将首次进入前十。
纳瓦罗将在女单半决赛中迎战2号种子、白俄罗斯选手萨巴伦卡——后者仅丢3局就以6-1/6-2横扫7号种子郑钦文，晋级4强。
在4场女双1/4决赛中，3号种子西尼亚科娃/汤森德、7号种子奇琴诺克/奥斯塔彭科和10号种子詹皓晴/库德梅托娃和唯一的非种子组合张帅/穆拉德诺维奇，成功晋级4强。
半决赛对阵形势如下：
[10]詹皓晴/库德梅托娃 vs [7]奇琴诺克/奥斯塔彭科
[3]西尼亚科娃/汤森德 vs 张帅/穆拉德诺维奇成都灰青黛科技有限公司
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