Marta Kostyuk vs. Sloane Stephens prediction, odds, picks for US Open 2026

Using powerful machine learning and data, we have simulated the result of Wednesday's Kostyuk-Stephens women's singles match, forming part of our tennis predictions coverage.

Our independent predictive model gives Kostyuk an 84% chance of winning against Stephens in the US Open 2026.

Marta Kostyuk vs. Sloane Stephens odds

We have researched the most up-to-date betting odds in America for this match, which are listed here:

• Moneyline: Sloane Stephens +740, Marta Kostyuk -901

All odds are correct at the time of publication and are subject to change.

Kostyuk vs. Stephens picks and best bet

After matching our probabilities against the best current odds, we can reveal our picks for each of the major markets in this matchup. Plus, find our best bet for the game below:

• Moneyline: Stephens @ +740 via DraftKings
• First Set: Stephens @ -128 via DraftKings

According to our tennis best bets, the top play to make on this match is Sloane Stephens to win the first set.

These picks are based on our probabilities matched against the implied probabilities from the sportsbook odds.

Kostyuk vs. Stephens updates and essential details

The US Open 2026 match between Marta Kostyuk and Sloane Stephens is scheduled to start on Wednesday at 11:00 AM ET.

• Who: Marta Kostyuk vs. Sloane Stephens
• Date: Wednesday, September 2, 2026
• Approx. Time: 11:00 AM ET/8:00AM PT
• Tournament: US Open Women's Singles 2026
• Round: Second round

All dates and times in this article are United States Eastern Time unless otherwise noted.

Conclusion

We predict Marta Kostyuk, with an 84% win probability, will likely beat Sloane Stephens at the US Open 2026.

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