Marta Kostyuk and Romanian Elena Gabriela Ruse suffered a heavy defeat in the doubles event at the US Open, losing to neutral Russian Veronika Kudermetova and Belgian Elise Mertens. The match lasted 1 hour and 21 minutes, ending with scores of 6:4, 6:1. Kostyuk and Ruse committed 6 double faults while their opponents made just one.
Neither team managed to serve an ace, but the break point conversion was significantly better for Kudermetova and Mertens – 4 out of 5 compared to Kostyuk and Ruse's 1 out of 5.

US Open – Grand Slam
New York, USA, hard
Prize money: $35,632,800
Third round doubles, September 2

Veronika Kudermetova (-)/Elise Mertens (Belgium) – Marta Kostyuk (Ukraine)/Elena Gabriela Ruse (Romania) 6:4, 6:1

It is worth noting that Marta Kostyuk was the only representative of Ukraine at the US Open, but she also lost in singles prior to the doubles match. She was defeated by Czech player Karolína Muchová just before reaching the quarterfinals. Reaching the fourth round at the US Open marked Kostyuk's best result in her history at this tournament in New York. In singles this year, Kostyuk triumphed over Katie Boulter (48, Great Britain), Zeynep Sönmez (81, Turkey) and Diane Parry (107, France).