Marta Kostyuk vs Sloane Stephens Prediction - WTA Cincinnati Open 2026
Last updated: Aug 17, 2026, 6:38PM | Published: Aug 17, 2026, 4:58AM
Marta Kostyuk will sqaure off with Sloane Stephens in the round of 32 at the 2026 WTA Cincinnati Open tournament on Wednesday.
This article features Stats Insider's prediction and tips for the Kostyuk vs Stephens match, plus the latest betting odds in Australia.
Who Will Win?
Utilising trusted machine learning and data, Stats Insider has simulated the outcome of Wednesday's Kostyuk-Stephens women's singles match 10,000 times.
Our proven predictive analytics model currently gives Kostyuk an 84% chance of winning against Stephens at the WTA Cincinnati Open tournament.
Kostyuk vs Stephens: Odds
The current betting odds in Australia for Wednesday's WTA Cincinnati Open match between Kostyuk and Stephens are shown below:
- Head to Head: Kostyuk $1.12, Stephens $6.00
- First Set: Kostyuk $1.20, Stephens $4.50
Odds are correct at the time of publication and subject to change.
Looking at the latest head-to-head odds, TAB currently has Kostyuk at $1.12 and Stephens at $6.00.
TAB currently has odds for Kostyuk to win the first set at $1.20 and odds for Stephens to win the first set at $4.50.
Kostyuk vs Stephens: Best Bets
- Head to Head: Stephens at $6.00 with TAB
- First Set: Stephens at $2.00 with TAB (51% probability)
These Marta Kostyuk vs Sloane Stephens betting tips are based on world-class simulations and gambling intelligence to help you place better bets with your chosen online bookie.
Although our predictive analytics model indicates that Kostyuk is more likely to win the match, betting on Stephens to win is our preferred option due to the edge we identified when comparing our data-led probabilities to the odds that are currently being offered.
Taking advantage of the edges seen here at Stats Insider is crucial to achieving long-term profitability as a bettor.
And while Kostyuk is more likely to win the first set on this occassion, our recommended bet of Stephens ($2.00) is based on the chance of that happening, per our model, and the betting odds currently available.
Kostyuk vs Stephens: Prediction
Stats Insider provides full coverage of the Marta Kostyuk vs Sloane Stephens match at the WTA Cincinnati Open tournament, including data-driven predictions and expert tips.
Our model updates frequently, so keep checking this page for the latest betting predictions before the Kostyuk-Stephens match at the WTA Cincinnati Open tournament.
As always, see Stats Insider's Best Bets to get betting tips for every tennis match, as well as predictions for a wide range of other sports.
Kostyuk vs Stephens: WTA Cincinnati Open Essential Details
The 2026 WTA Cincinnati Open match between Marta Kostyuk and Sloane Stephens is scheduled to begin at 1:00am AEST.
- Match: Marta Kostyuk vs Sloane Stephens
- Date: Wednesday 19 August 2026
- Approx. Time: 1:00am AEST
- Event: WTA Cincinnati, USA Women's Singles 2026
- Round: Round of 32
All dates and times in this article are in Australian Eastern Standard Time (AEST), unless otherwise noted.
Conclusion
Our Marta Kostyuk vs Sloane Stephens predictions are the result of 10,000 data-driven simulations of the game, all curated by our team of experienced data scientists and analysts. We use cutting-edge technology and machine learning to ensure our tennis tips are accurate and reliable, giving you the knowledge you need to make informed decisions with confidence.
If you decide to use our predictions for betting purposes, it's important to gamble responsibly and keep track of your money. For free and confidential support, call 1800 858 858 or visit gamblinghelponline.org.au.
More on Tennis
Stats Insider is your go-to source for betting on tennis in Australia, with the latest tennis betting news, tips for every tennis match, and our in-house approach to accurately ranking the world's top 100 men's and women's players.

