San Francisco Frontiers - Noskova edges Kostyuk to reach US Open quarter-finals

The Czech Noskova, who has largely flown under the radar in New York despite winning Wimbledon, beat Kostyuk 7-5, 5-7, 6-4, finally sealing the win on her sixth match point when Kostyuk netted a backhand return.

"I an more than relieved," Noskova said after booking a last-eight showdown with two-time defending champion Aryna Sabalenka. "This match was so tough, emotionally more so than physically."

After a hard-fought first set, Noskova, seeded sixth, appeared poised for a relatively straightforward win, holding two match points while serving for the second set up at 5-4.

But Kostyuk, who has won two titles in 2026, slapped a forehand winner on the first and saved the second by drilling a ball at Noskova, who was at the net and couldn't handle the volley.

Riding momentum, Kostyuk went on to take the next two games to force a third set.

In the third set, the Czech scored a key break at 3-3.

But with Noskova serving at 5-4, Kostyuk saved three more match points but couldn't return a strong serve from Noskova, who fell to her knees after finally finishing the two hour and 27-minute match.

J.Scott--SFF