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OPEN INTEREST:

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404,028

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events

MATCHED EVENTS:

2,681

PLATFORM COVERAGE:

5

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Kalshi:

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Kostyuk vs Stephens
kalshi

Who will win Kostyuk vs Stephens?

Volume:
$1,670,487

Marta Kostyuk

 - Kalshi

Marta Kostyuk - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Aug 18, 2026

Closed: Aug 18, 4:50 PM EST

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Kalshi

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Join Kalshi and score $25 for your first trade.
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
kalshi

Marta Kostyuk

View
100%
14%
Yes 100¢No 0¢
100¢
N/A
$420,006
N/A
N/A
$276,201
Settled
Yes
kalshi

Sloane Stephens

0%
12%
Yes 0¢No 100¢
100¢
N/A
$1,250,481
N/A
N/A
$618,997
Settled
No
Total markets: 2

Description

Marta Kostyuk and Sloane Stephens will engage in a professional tennis match during the 2026 WTA Cincinnati Round Of 32. The winner of the match after play commences determines the outcome.

Kalshi

If Marta Kostyuk wins the Kostyuk vs Stephens professional tennis match in the 2026 WTA Cincinnati Round Of 32 after a ball has been played, then the market resolves to Yes. If Sloane Stephens wins the Kostyuk vs Stephens professional tennis match in the 2026 WTA Cincinnati Round Of 32 after a ball has been played, then the market resolves to Yes.