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Cincinnati Open: Marta Kostyuk vs Sloane Stephens
polymarket

Cincinnati Open: Marta Kostyuk vs Sloane Stephens

Volume:
$192,271

Cincinnati Open: Marta Kostyuk vs Sloane Stephens

 - Polymarket

Cincinnati Open: Marta Kostyuk vs Sloane Stephens - Polymarket

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Aug 18, 2026

Closed: Aug 18, 5:19 PM EST

polymarket

Polymarket

View
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
polymarket

Cincinnati Open: Marta Kostyuk vs Sloane Stephens

View
100%
14%
Yes 100¢No 0¢
0.1¢
N/A
$187,363
N/A
N/A
N/A
Settled
Yes
polymarket

Cincinnati Open: Marta Kostyuk vs Sloane Stephens Set 1 Winner

View
100%
21%
Yes 100¢No 0¢
0.1¢
N/A
$2,366
N/A
N/A
N/A
Settled
Yes
polymarket

Cincinnati Open: Marta Kostyuk vs Sloane Stephens Set Handicap +/-1.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$1,317
N/A
N/A
N/A
Settled
Yes
polymarket

Cincinnati Open: Marta Kostyuk vs Sloane Stephens Set 2 Winner

View
100%
19%
Yes 100¢No 0¢
0.1¢
N/A
$731
N/A
N/A
N/A
Settled
Yes
polymarket

Cincinnati Open: Marta Kostyuk vs Sloane Stephens Match O/U 21.5

View
100%
52%
Yes 100¢No 0¢
0.1¢
N/A
$97
N/A
N/A
N/A
Settled
Yes
polymarket

Cincinnati Open: Marta Kostyuk vs Sloane Stephens Set 1 O/U 8.5

View
100%
41%
Yes 100¢No 0¢
0.1¢
N/A
$23
N/A
N/A
N/A
Settled
Yes
polymarket

Cincinnati Open: Marta Kostyuk vs Sloane Stephens Match O/U 22.5

View
100%
52%
Yes 100¢No 0¢
0.1¢
N/A
$7
N/A
N/A
N/A
Settled
Yes
polymarket

Cincinnati Open: Marta Kostyuk vs Sloane Stephens Set 2 O/U 8.5

View
100%
1%
Yes 100¢No 0¢
0.1¢
N/A
$5
N/A
N/A
N/A
Settled
Yes
polymarket

Cincinnati Open: Marta Kostyuk vs Sloane Stephens Total Sets: O/U 2.5

View
0%
28%
Yes 0¢No 100¢
—
N/A
$362
N/A
N/A
N/A
Settled
Yes
polymarket

Completed Match

View
100%
1%
Yes 100¢No 0¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

Cincinnati Open: Marta Kostyuk vs Sloane Stephens Set 1 O/U 9.5

View
100%
52%
Yes 100¢No 0¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

Cincinnati Open: Marta Kostyuk vs Sloane Stephens Set 2 O/U 9.5

View
100%
1%
Yes 100¢No 0¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

Cincinnati Open: Marta Kostyuk vs Sloane Stephens Set 1 O/U 10.5

View
100%
82%
Yes 100¢No 0¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

Cincinnati Open: Marta Kostyuk vs Sloane Stephens Set 2 O/U 10.5

View
100%
1%
Yes 100¢No 0¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

Cincinnati Open: Marta Kostyuk vs Sloane Stephens Match O/U 23.5

View
100%
51%
Yes 100¢No 0¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
Total markets: 15

Description

This market refers to the tennis match between Marta Kostyuk and Sloane Stephens in the Cincinnati Open, originally scheduled for August 18, 2026 at 10:00AM ET. This market will resolve to 'Marta Kostyuk' if Marta Kostyuk advances against Sloane Stephens. This market will resolve to 'Sloane Stephens' if Sloane Stephens advances against Marta Kostyuk. If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, this market will resolve to 50-50. If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances. If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50. The primary resolution source will be official information from the WTA Tour. A consensus of credible reporting may also be used.

Polymarket

This market refers to the tennis match between Marta Kostyuk and Sloane Stephens in the Cincinnati Open, originally scheduled for August 18, 2026 at 10:00AM ET. This market will resolve to 'Marta Kostyuk' if Marta Kostyuk advances against Sloane Stephens. This market will resolve to 'Sloane Stephens' if Sloane Stephens advances against Marta Kostyuk. If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, this market will resolve to 50-50. If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances. If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50. The primary resolution source will be official information from the WTA Tour. A consensus of credible reporting may also be used.

Frequently asked questions

The dashboard for the Cincinnati Open tennis match market tracks real-time odds and price movements specifically on Polymarket. It shows how traders on Polymarket are pricing the contest, along with 24-hour volume of $186,561. This view lets you monitor sentiment and liquidity for this market as the tournament unfolds.

On Polymarket, this market reflects trader sentiment rather than traditional sportsbook lines. Prediction market odds can diverge noticeably because they incorporate real-time trader positioning and volume dynamics. Sportsbook odds, shaped by bookmaker adjustments and broader betting patterns, may present different implied probabilities. The contrast highlights how decentralized trader behavior versus institutional pricing models can yield varied expectations for the Cincinnati Open tennis match market.

This market resolves around Aug 25, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The result will reflect the official match conclusion, and the platform will update the market status accordingly based on widely accepted sources covering the tournament.