Two weeks, two wins: Kostyuk beats Stephens again at US Open

New York, late night. Arthur Ashe Stadium was still full of noise when Marta Kostyuk walked into the press room. She had just finished her match with a 6-1, 7-5 scoreline against Sloane Stephens, a 2026 US Open champion. But what caught my attention was not her 30th winner, but the way she sat down, took a deep breath, as if she had just finished a marathon. I have been following women's tennis for nearly four decades, and I know that breath. It is the breath of someone who has just overcome herself, not just an opponent. Two weeks ago, in Cincinnati, she also defeated Stephens 7-5, 7-5. Two weeks, two wins, same opponent. But this match was different. This was a Grand Slam, where old memories can become a burden or motivation. And for Kostyuk, this was a full circle: she once won the junior doubles title at this very Flushing Meadows, while Stephens lifted the women's singles trophy. That context, as they say, is material for fairy tales. But sports do not write fairy tales. Sports write with data, with tactics, and with decisive moments. Look at the numbers. Kostyuk served 8 aces and hit 30 winners – exactly 20 more than Stephens. This was not a tactical battle. This was a deliberate domination. From the very first game, she showed her intent: strong serve, move forward, end points early. Stephens, an excellent defensive player with fluid movement, was pushed into a passive position. She could only chase the ball, and when you chase the ball all match, you make mistakes. That is what happened. But I do not want to just talk about numbers. I want to talk about the moment in the tenth game of the second set, when Kostyuk was serving to save set point. The score was 4-5, and she had let slip a 4-2 lead. Stephens had adjusted, returning deeper and extending rallies. Kostyuk, with her high-risk attacking game, began to make errors. I have seen this many times in young players: they win the first set easily, then when the opponent changes, they do not know what to do. But Kostyuk did not collapse. She served an unreturnable ace to save set point, then won the last three games to close out the match. That is a sign of maturity. After the match, she said: "I knew Sloane would try to change something. She is a Grand Slam champion, she would not give up easily." That statement shows she was mentally prepared for this. She did not just have Plan A, but also Plan B. When Stephens tried to neutralize her initial attack, Kostyuk did not panic. She waited, then re-imposed her game. This is a sign of a tactical mind, not just a strong arm. But there is something I want to emphasize, a perspective that perhaps few notice. This win, though impressive, still reveals an inherent weakness. Kostyuk hit 30 winners, but she also let slip a 4-2 lead in the second set. That means when Stephens adjusted, her attacking game became fragile. She relies too much on ending points early. When opponents hit deep and extend rallies, she tends to make errors. This is a tactical issue, not a physical one. And it will become a big problem when she faces top players like Sabalenka or Swiatek, who not only defend well but also attack powerfully. I recall Cincinnati, where she also beat Stephens in tight sets. That match showed she can win in close battles. But this match, with a 6-1 first set, showed something else: when an opponent is not in rhythm, she can crush them. The problem is, in later rounds of a Grand Slam, she will face opponents who are always in rhythm. And then, letting slip a 4-2 lead will become a fatal crack. But I also want to talk about something else, something I believe is more important than tactics. It is the story of resilience. Kostyuk, a Ukrainian, has had to compete while her country is at war. Every match she plays carries a meaning beyond sports. She does not just play for herself, but for those watching from bomb shelters. I have witnessed many players compete under pressure, but Kostyuk's pressure is different. She carries a nation on her shoulders. And she can still focus on every serve, every return. That, to me, is a feat. I remember writing once: "The court can change owners, but the nights of losing your voice calling out names are never for sale." Tonight, at Arthur Ashe, I heard the name Kostyuk being called. Not from the stands, but from herself. She is calling herself forward. And she answered. But the biggest question remains: can she maintain this form through the second round, third round, and beyond? 34 match wins this year is an impressive number, placing her among the tour leaders. But those wins mostly came from smaller events. At Grand Slams, she has yet to make a deep run. And if she wants to do that, she needs to solve the consistency problem. She cannot keep letting leads slip before trying to save them. In later rounds, opponents will not give her that chance. I also want to talk about Stephens. She is 31, and this loss may be a marker of the end of an era. Stephens was a US Open champion, a Roland Garros finalist. But time waits for no one. And when a younger, stronger, and perhaps hungrier player beats you twice in two weeks, that is a clear signal. The new generation is coming. And they are not just coming; they want to take the throne. But I do not want to end this article with a pessimistic prophecy. I want to end with a question. Kostyuk has proven she can beat a Grand Slam champion. She has proven she can save set points and win the last three games. She has proven she can handle pressure. But can she do all of that in a three-set battle, against an opponent who never gives up, in a Grand Slam quarterfinal? That is a question only time can answer. And I, an old man, only believe in what I have witnessed. Tonight, I witnessed something. I am just not sure how long it will last. People remember transfer fees, but I remember the look in the captain's eyes when he signed his last contract. Tonight, I remember the look in Kostyuk's eyes as she walked into the press room. It was the look of someone who has just completed a task, but knows a bigger one lies ahead. And that, to me, is the most compelling thing at this tournament.