Teenager Coco Gauff was among three women to reach maiden Grand Slam quarter-finals at the French Open, and 2020 winner Iga Swiakek also advanced.
American Gauff, who won the 2018 junior title here, dominated Tunisia's Ons Jabeur to win 6-3 6-1.
Greece's Maria Sakkari knocked out last year's runner-up and fourth seed Sofia Kenin 6-1 6-3, while Barbora Krejcikova thrashed Sloane Stephens 6-2 6-0.
It means eighth seed Swiatek is the highest ranked woman left.
The Polish defending champion, 20, beat Ukraine's Marta Kostyuk 6-3 6-4 and will face Sakkari on Wednesday.
