Marta Kostyuk vs Sloane Stephens Prediction & Picks - WTA Cincinnati Open

WTA - WTA Cincinnati Open

WTA 11 Ukraine
Marta Kostyuk
8/18/26 15:00
WTA 240 USA
Sloane Stephens

Prediction:

 

Marta Kostyuk -5.5 games

-140
$250 offered for betting!

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 by Lou Aguila | in Tennis Picks

Marta Kostyuk sets her sights on a big win over Sloane Stephens in the third round of the 2026 Cincinnati Open.

Current Form:

Sloane Stephens conquered two Austrians in back-to-back matches to reach the round of 32 at Cincinnati. The former Grand Slam winner swept Sinja Kraus 7-5, 6-3 in the first round and followed it up with another convincing win over Anastasia Potapova 6-2, 6-4. Stephens is 10-8 on the hard court in 2026.

Marta Kostyuk needed three sets to dispatch Sofia Kenin 4-6, 6-3, 7-5. The Ukrainian fired 9 aces and won 76 percent of her first serves in this match. She also broke Kenin four times behind 31 return points. Kostyuk is 9-5 on the hard court in 2026.

The Matchup: Kostyuk and Stephens will play against each other for the first time on the WTA Tour.

Up to $250 to bet on Marta Kostyuk - Sloane Stephens! 

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Marta Kostyuk vs Sloane Stephens Form

Marta Kostyuk and Sloane Stephens Latest Matches

Marta Kostyuk Latest matches
W L W W L W
Victories

4/6 (67%)

Defeats

2/6 (33%)

Aug 16, 2026 - WTA Cincinnati Open

Marta Kostyuk
2 :  1
Sofia Kenin

Aug 8, 2026 - WTA National Bank Open

Marta Kostyuk
1 :  2
Iga Swiatek

Aug 6, 2026 - WTA National Bank Open

Marta Kostyuk
2 :  0
Madison Keys

Aug 4, 2026 - WTA National Bank Open

Marta Kostyuk
2 :  0
Katherine Sebov

Jul 9, 2026 - WTA Wimbledon Championships

Marta Kostyuk
0 :  2
Linda Noskova

Jul 8, 2026 - WTA Wimbledon Championships

Marta Kostyuk
2 :  0
Jasmine Paolini
Sloane Stephens Latest matches
L W W L W W
Victories

4/6 (67%)

Defeats

2/6 (33%)

Aug 16, 2026 - WTA Cincinnati Open

Sloane Stephens
2 :  0
Anastasia Potapova

Aug 14, 2026 - WTA Cincinnati Open

Sloane Stephens
2 :  0
Sinja Kraus

Aug 5, 2026 - WTA National Bank Open

Sloane Stephens
0 :  2
Belinda Bencic

Aug 3, 2026 - WTA National Bank Open

Solana Sierra
0 :  2
Sloane Stephens

Aug 1, 2026 - WTA National Bank Open

Harriet Dart
1 :  2
Sloane Stephens

Jul 30, 2026 - Memphis Classic

Sloane Stephens
0 :  2
Darja Vidmanova
Marta Kostyuk vs Sloane Stephens Picks

Marta Kostyuk - Sloane Stephens Key Points

  1. Marta Kostyuk is the No.10 seed in the tournament.
  2. Marta Kostyuk is 9-5 on the hard court in 2026.
  3. Sloane Stephens is 10-8 on the hard court in 2026.
  4. Sloane Stephens is 15-15 overall in 2026.
Up to $250 to bet on Marta Kostyuk - Sloane Stephens! 

Limited Offer. Currently at Caesars Sportsbook

Our Marta Kostyuk vs Sloane Stephens Prediction

The Difference Maker: Kostyuk is 5-2 in third-round matches in 2026. Moreover, she has never lost to a player outside the top-100 this year.

As for Stephens, she has never won a match against a top-20 player in the last two years.

What to Expect: Stephens deserves credit for her two morale-boosting wins over Kraus and Potapova. Unfortunately, her run is about to end at the hands of Kostyuk, who has been the most consistent performer on the tour since Spring.

Kostyuk should easily overpower Stephens, who still looks a shell of her former self.

Fearless Forecast: Marta Kostyuk wins 6-2, 6-2

Our betting prediction for Marta Kostyuk vs. Sloane Stephens: Marta Kostyuk -5.5 games

Prediction:

 

Marta Kostyuk -5.5 games

-140
$250 offered for betting!

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All tips are fully researched and given in good faith, but profits cannot be guaranteed.