American Jennifer Brady reached her first Grand Slam semi-final after she beat Kazakh Yulia Putintseva in straight sets at the US Open.
The 25-year-old, who knocked out former champion Angelique Kerber in the previous round, won 6-3 6-2.
Brady, who showed her intent by racing to a 4-0 lead after 15 minutes, is the first woman into the last four.
Fourth seed and 2018 champion Naomi Osaka plays Shelby Rogers in Tuesday's other quarter-final (00:00 BST).
The other women's quarter-finals are on Wednesday when 23-time Grand Slam champion Serena Williams faces Bulgaria's Tsvetana Pironkova, while two-time major winner Victoria Azarenka plays Belgian 16th seed Elise Mertens.