TOTAL VOLUME:

$154.3b

24H VOL:

$228,458,490

24H TRANSACTIONS:

2,984,028,936

OPEN INTEREST:

$1,879,276,037

410,833

Markets across

40,345

events

MATCHED EVENTS:

4,363

PLATFORM COVERAGE:

5

Polymarket:

37%

VS.

Kalshi:

63%

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Siniakova vs Stearns
kalshi

Who will win Siniakova vs Stearns?

Volume:
$1,441,487

Katerina Siniakova

 - Kalshi

Katerina Siniakova - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Oct 20, 2026

Closed: Oct 20, 5:50 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

Katerina Siniakova

View
100%
Yes 100¢No 0¢
—
N/A
$621,316
N/A
N/A
$320,586
Settled
Yes
kalshi

Peyton Stearns

View
0%
Yes 0¢No 100¢
—
N/A
$820,170
N/A
N/A
$345,805
Settled
No
Total markets: 2

Description

This market centers on a professional tennis match between Katerina Siniakova and Peyton Stearns scheduled for the 2026 WTA Osaka Round Of 32. The outcome depends on which player wins the match, provided that play actually begins. If the match does not start due to injury, cancellation, or other issues, the market resolves to a fair price instead.

Kalshi

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