Marta Kostyuk powered into the 2026 US Open fourth round with a commanding 6-3, 6-2 victory over Ekaterina Alexandrova on Grandstand. Read the full match report.
Introduction:
Marta Kostyuk delivered a masterclass performance on Grandstand to defeat Ekaterina Alexandrova 6-3, 6-2 in the third round of the US Open. The Ukrainian standout displayed exceptional consistency and relentless baseline depth to dispatch her seeded opponent in straight sets, booking an emphatic ticket to the round of 16 in Flushing Meadows.

Dominant Start on Grandstand
The encounter commenced with high energy as both players looked to impose their power. Marta Kostyuk Dominates Ekaterina Alexandrova to Storm into US Open 2026 Round of 16. See also:Â Marta Kostyuk Powers Past Storm Hunter 6-4, 6-1
Ukraine’s Marta Kostyuk produced a commanding, high-tempo performance on Grandstand to sweep past Ekaterina Alexandrova 6-3, 6-2 in the third round of the 2026 US Open. Wrapping up the contest in just 68 minutes, Kostyuk secured her place in the second week at Flushing Meadows with an emphatic display of controlled aggression.

Lightning Start Sets the Tone
Marta Kostyuk wasted no time establishing authority from the baseline. Striking her groundstrokes with crisp depth and relentless pace, she pushed Alexandrova behind the baseline early. The Ukrainian broke serve in the fourth game, using sharp cross-court forehands to open up the court. While Alexandrova attempted to rely on her trademark flat power, Kostyuk’s exceptional court coverage forced uncomfortable errors from the Russian. Serving out the set with confidence, Kostyuk claimed the opener 6-3 in just 36 minutes.

Alexandrova Struggles for Rhythm Under Pressure
The second set followed a similar script as Kostyuk maintained intense pressure on Alexandrova’s delivery. Alexandrova struggled to find rhythm behind her second serve, winning under 35 percent of those points as Kostyuk stepped inside the baseline to punish short balls. An immediate break in the third game tilted the momentum decisively. Frustration began mounting for Alexandrova, who committed 24 unforced errors across the match, unable to counter Kostyuk’s quick transition from defense to offense.

A Flawless Finish into the Second Week
Kostyuk kept her foot firmly on the pedal. Backed by solid serving—winning 78 percent of her first-serve points without facing a single break point in the second set—she secured an insurance break to lead 5-2. Serving for the match, Kostyuk closed out the victory on her first match point with an unreturnable serve wide to the ad court.
With this clinical straight-sets triumph, Kostyuk matches her deepest run in New York, looking every bit like a dangerous contender in the bottom half of the women’s draw as the tournament heads into the crucial fourth round.
