TOTAL VOLUME:

$154.1b

24H VOL:

$172,394,893

24H TRANSACTIONS:

2,983,476,643

OPEN INTEREST:

$1,821,572,886

404,136

Markets across

40,075

events

MATCHED EVENTS:

4,369

PLATFORM COVERAGE:

5

Polymarket:

37%

VS.

Kalshi:

63%

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Day vs Birrell
kalshi

Who will win Day vs Birrell?

Volume:
$11,947

Kimberly Birrell

 - Kalshi

Kimberly Birrell - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Oct 20, 2026

Closed: Oct 20, 12:59 PM 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

Kimberly Birrell

View
61%
1%
Yes 61¢No 39¢
—
N/A
$6,865
N/A
N/A
$6,806
Settled
ResolvedResult not available
kalshi

Kayla Day

View
39%
Yes 39¢No 61¢
—
N/A
$5,083
N/A
N/A
$5,059
Settled
ResolvedResult not available
Total markets: 2

Description

This market tracks the outcome of a professional tennis match between Kayla Day and Kimberly Birrell scheduled for the 2026 WTA Osaka Round of 32. It focuses on which player wins the match after play has officially begun. The market accounts for potential match disruptions, ensuring fair resolution if the contest does not proceed as planned.

Kalshi

If Kayla Day wins the Day vs Birrell professional tennis match in the 2026 WTA Osaka Round Of 32 after a ball has been played, then the market resolves to Yes. If Kimberly Birrell wins the Day vs Birrell professional tennis match in the 2026 WTA Osaka Round Of 32 after a ball has been played, then the market resolves to Yes.