TOTAL VOLUME:

$134.2b

24H VOL:

$130,522,377

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,438,389,636

404,028

Markets across

30,214

events

MATCHED EVENTS:

2,681

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

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Siniakova vs Keys
kalshi

Who will win Siniakova vs Keys?

Volume:
$1,262,544

Madison Keys

 - Kalshi

Madison Keys - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Aug 18, 2026

Closed: Aug 18, 12:36 PM EST

kalshi

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

Madison Keys

View
100%
25%
Yes 100¢No 0¢
100¢
N/A
$578,367
N/A
N/A
$423,147
Settled
Yes
kalshi

Katerina Siniakova

0%
26%
Yes 0¢No 100¢
100¢
N/A
$684,177
N/A
N/A
$447,248
Settled
No
Total markets: 2

Description

Katerina Siniakova and Madison Keys will face off in a professional tennis match at the 2026 WTA Cincinnati Round Of 32. The market resolves based on which player claims victory after the match starts.

Kalshi

If Katerina Siniakova wins the Siniakova vs Keys professional tennis match in the 2026 WTA Cincinnati Round Of 32 after a ball has been played, then the market resolves to Yes. If Madison Keys wins the Siniakova vs Keys professional tennis match in the 2026 WTA Cincinnati Round Of 32 after a ball has been played, then the market resolves to Yes.