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$134.1b

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2,388,728,490

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$1,423,222,590

402,751

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30,217

events

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2,632

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

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Katerina Siniakova vs Madison Keys: Set 1 Winner
kalshi

Katerina Siniakova vs Madison Keys: Set 1 Winner

Volume:
$62,045

Madison Keys

 - Kalshi

Madison Keys - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Aug 18, 2026

Closed: Aug 18, 11:51 AM EST

kalshi

Kalshi

View
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%
Yes 100¢No 0¢
100¢
N/A
$44,188
N/A
N/A
$38,882
Settled
Yes
kalshi

Katerina Siniakova

View
0%
Yes 0¢No 100¢
100¢
N/A
$17,857
N/A
N/A
$15,865
Settled
No
Total markets: 2

Description

This market focuses on predicting which player will win the first set in an upcoming professional tennis match. The outcome depends solely on the performance of the athletes during the contest, with specific conditions addressing potential match disruptions such as injuries or cancellations.

Kalshi

If Katerina Siniakova wins set 1 in the Katerina Siniakova vs Madison Keys professional tennis match in the 2026 WTA Cincinnati Round Of 32, then the market resolves to Yes. If Madison Keys wins set 1 in the Katerina Siniakova vs Madison Keys professional tennis match in the 2026 WTA Cincinnati Round Of 32, then the market resolves to Yes.