US Open heads into its final week.
Defending champion Sloane Stephens cruised past Elise Mertens after her 6-3 6-3 win at the Arthur Ashe Stadium. She will face 19th seed Latvian Anastasija Sevastova.
Serena Williams was relieved to have come up tops in her fourth round match against Kaia Kanepi. Williams won 6-0 4-6 6-3.
Other results:
A. Sevastova beat E. Svitolina 6-3 1-6 6-0
K. Pliskova beat A. Barty 6-4 6-4
Mens Results:
D. Thiem beat K Anderson 7-5 6-2 7-6
R. Nadal beat N. Basilashvili 6-3 6-3 7-6 6-4
J. Isner beat M. Roanic 3-6 6-3 6-4 3-6 6-2
