Mirra Andreeva defeated Anastasia Potapova 5-7, 6-4, 6-3 in the fourth round of the 2026 US Open women’s singles. Andreeva advances to the quarterfinals; Potapova is eliminated.

Andreeva reached the fourth round by beating Nikola Bartůňková 6-2, 7-6(5) in the third round. Potapova had advanced with a 6-2, 7-5 win over Amanda Anisimova.