Marta Kostyuk Turns Attention to New York After Strong Cincinnati Run Ahead of US Open

NEW YORK — Marta Kostyuk is turning her attention toward New York after another strong showing on the North American hard courts, with the Ukrainian star arriving at the U.S. Open buildup as the world No. 11 and one of the most dangerous players outside the very top tier of the women’s rankings.

Kostyuk’s latest tournament ended Saturday in the Cincinnati Open quarterfinals, where American Coco Gauff produced a commanding 6-2, 6-2 victory.

The score was one-sided, but the defeat did little to erase what had been another productive week for Kostyuk.

Before running into Gauff, the 24-year-old defeated former Australian Open champion Sofia Kenin, former U.S. Open champion Sloane Stephens and French Open champion Mirra Andreeva during her Cincinnati run.

That stretch reinforced what has become increasingly clear during the 2026 season: Kostyuk is no longer simply an occasional threat to the sport’s elite.

She has become one of them.

Current data updated Monday lists Kostyuk at No. 11 in the world, matching her career-high ranking, with a 32-8 singles record this season.

Those numbers reflect a season in which the Ukrainian has repeatedly gone deep at major tournaments.

Kostyuk reached the semifinals at both Roland Garros and Wimbledon this summer and captured titles in Madrid and Rouen earlier in the year.

Her combination of explosive movement, aggressive groundstrokes and increasing confidence has pushed her closer than ever to the established leaders of the women’s game.

Cincinnati offered another glimpse of that progress.

Kostyuk survived a three-set battle against Kenin, defeated Stephens in straight sets and then rallied from a set down against Andreeva, winning 4-6, 6-0, 6-2 to reach the quarterfinals.

Gauff stopped that momentum.

The American dominated Kostyuk’s second serve and broke six times during the quarterfinal, finishing the match in just over an hour.

Kostyuk won only 21 percent of the points behind her second serve and committed eight double faults, leaving her under constant pressure against one of the best defensive players in women’s tennis.

It was a difficult ending to the tournament.

But in tennis, especially during the compressed North American summer, there is little time to dwell on one loss.

New York is already waiting.

Kostyuk is scheduled to participate Thursday in the Stars of the Open exhibition at Arthur Ashe Stadium, part of U.S. Open Fan Week.

Her opponent will be American Amanda Anisimova in a one-set match scheduled to open the exhibition program at 6 p.m. Eastern Time.

The matchup provides Kostyuk with an immediate opportunity to reset after Cincinnati.

She also enters it with a favorable history against Anisimova.

The official U.S. Open site lists Kostyuk as holding a 3-1 head-to-head advantage over the American, including a victory earlier this season on the hard courts in Brisbane.

While Thursday’s match is an exhibition rather than a tour event, the setting matters.

Arthur Ashe Stadium is the largest tennis stadium in the world.

For a player preparing for the U.S. Open, getting an early opportunity to feel the court, lights, atmosphere and New York crowd can offer valuable preparation before the pressure of Grand Slam competition arrives.

Kostyuk enters that stage with substantially greater expectations than she carried into previous U.S. Opens.

Last season, she reached the fourth round in New York for the first time.

This year, her résumé looks dramatically different.

She is a two-time Grand Slam semifinalist in 2026.

She has won major clay-court titles.

She has defeated several of the biggest names in the women’s game.

And she now sits on the doorstep of the world’s Top 10.

The question is no longer whether Kostyuk is capable of making a deep run at a Grand Slam.

She has already proved that.

The question is whether New York can become the tournament where she pushes one step further.

Her summer results suggest the possibility is real.

Kostyuk reached the Wimbledon semifinals in July before falling to Linda Noskova. She then moved onto the North American hard courts and picked up significant wins against Madison Keys in Toronto and Kenin, Stephens and Andreeva in Cincinnati.

That consistency across surfaces represents one of the most encouraging developments in her season.

Kostyuk has always possessed elite athleticism.

Now the results are increasingly matching the talent.

There are still vulnerabilities.

Gauff exposed one of them Saturday.

When Kostyuk’s serve becomes unreliable, particularly the second serve, elite returners can quickly seize control of her service games.

The margins at the top of women’s tennis are unforgiving.

A handful of double faults or poor service games can turn a competitive match into a rout.

That will be one area to watch closely as Kostyuk moves toward the U.S. Open.

But the broader trajectory remains unmistakably upward.

At 24, she is entering what should be the prime years of her career.

She has already reached No. 11 in the world.

She has become a legitimate contender at the majors.

And she has built a 2026 season in which losing in the quarterfinals of a WTA 1000 tournament now feels more like a disappointment than an achievement.

That shift says plenty about how far Kostyuk has come.

New York now represents the next test.

First comes Anisimova under the Arthur Ashe lights Thursday.

Then comes the much larger challenge of the U.S. Open.

After a Cincinnati run that ended abruptly against Gauff but included three quality victories, Kostyuk arrives in New York with momentum, experience and increasingly serious expectations.

For one of the fastest-rising players in women’s tennis, the next chapter of a breakthrough season is about to begin.