TOTAL VOLUME:

$154.4b

24H VOL:

$290,393,159

24H TRANSACTIONS:

2,984,640,614

OPEN INTEREST:

$1,944,100,805

420,493

Markets across

40,511

events

MATCHED EVENTS:

4,612

PLATFORM COVERAGE:

5

Polymarket:

37%

VS.

Kalshi:

63%

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WTA Tennis: Osaka, Japan Winner
polymarket
kalshi

Who will win WTA Tennis Osaka, Japan?

Volume:
$20,246

Katerina Siniakova

all

2 markets

Kalshi

Polymarket

consensus

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Oct 25, 2026

Closed: Oct 25, 2:49 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
$5,753
N/A
N/A
$5,417
1w 4d 3h
Yes
polymarket

Katerina Siniakova

View
100%
74%
Yes 100¢No 0¢
—
N/A
$18
N/A
N/A
N/A
Settled
Yes
kalshi

Lilli Tagger

View
0%
26%
Yes 0¢No 100¢
—
N/A
$4,377
N/A
N/A
$4,085
1w 4d 3h
No
polymarket

Lilli Tagger

View
0%
20%
Yes 0¢No 100¢
—
N/A
$71
N/A
N/A
N/A
Settled
No
kalshi

Ann Li

View
0%
41%
Yes 0¢No 100¢
—
N/A
$3,414
N/A
N/A
$2,681
1w 4d 3h
No
polymarket

Ann Li

View
0%
25%
Yes 0¢No 100¢
—
N/A
$404
N/A
N/A
N/A
Settled
No
kalshi

Ashlyn Krueger

View
0%
Yes 0¢No 100¢
—
N/A
$1,962
N/A
N/A
$1,896
1w 4d 3h
No
polymarket

Ashlyn Krueger

View
0%
27%
Yes 0¢No 100¢
—
N/A
$207
N/A
N/A
N/A
Settled
No
kalshi

Zeynep Sonmez

View
0%
6%
Yes 0¢No 100¢
—
N/A
$1,507
N/A
N/A
$1,507
1w 4d 3h
No
polymarket

Zeynep Sonmez

View
0%
16%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
No
polymarket

Claire Liu

View
0%
3%
Yes 0¢No 100¢
—
N/A
$1,000
N/A
N/A
N/A
Settled
No
kalshi

Claire Liu

View
N/A
N/A
—
N/A
N/A
N/A
N/A
N/A
1w 4d 3h
No
kalshi

Talia Gibson

View
0%
Yes 0¢No 100¢
—
N/A
$467
N/A
N/A
$457
1w 4d 3h
No
polymarket

Talia Gibson

View
0%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
No
kalshi

Maya Joint

View
0%
Yes 0¢No 100¢
—
N/A
$446
N/A
N/A
$446
1w 4d 3h
No
polymarket

Maya Joint

View
0%
100%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
No
kalshi

Emerson Jones

View
0%
Yes 0¢No 100¢
—
N/A
$374
N/A
N/A
$374
1w 4d 3h
No
polymarket

Emerson Jones

View
0%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
No
polymarket

Paula Badosa

View
0%
14%
Yes 0¢No 100¢
—
N/A
$100
N/A
N/A
N/A
Settled
No
kalshi

Paula Badosa

View
N/A
N/A
—
N/A
N/A
N/A
N/A
N/A
1w 4d 3h
No
kalshi

Katie Boulter

View
0%
Yes 0¢No 100¢
—
N/A
$78
N/A
N/A
$78
1w 4d 3h
No
polymarket

Katie Boulter

View
0%
80%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
No
polymarket

Sonay Kartal

View
0%
97%
Yes 0¢No 100¢
—
N/A
$33
N/A
N/A
N/A
Settled
No
kalshi

Sonay Kartal

View
N/A
N/A
—
N/A
N/A
N/A
N/A
N/A
1w 4d 3h
No
kalshi

Oleksandra Oliynykova

View
0%
Yes 0¢No 100¢
—
N/A
$20
N/A
N/A
$20
1w 4d 3h
No
Total markets: 25 of 86

Description

This prediction group concerns the winner of the 2026 WTA Osaka professional tennis tournament. Participants are betting on which player will ultimately win the women's singles title at this event. The markets cover a wide range of potential competitors.

PredictionHero - Resolution Divergence Alerts (RDA)

Divergence Detected

Issue: Kalshi markets only resolve positively if one of the listed players wins, while Polymarket includes an 'Other' option for non-listed winners and addresses tournament cancellation/postponement.Hero tip: Polymarket's 'Other' option and cancellation/postponement rule provide a more comprehensive market, potentially offering better value if you anticipate outcomes outside the listed players.

Critical divergence points:

  • Polymarket: Resolves to the winner of the 2026 Osaka, Japan Women’s Singles Tournament. If a player not listed wins, the market resolves to 'Other'. If the tournament is cancelled or postponed after November 8, 2026, it resolves to 'Other'.
  • Kalshi: Resolves to 'Yes' if any of the listed players win the 2026 Osaka tournament. No explicit resolution path for non-listed winners or tournament cancellation/postponement.
Our PredictionHero Resolution Divergence Alerts (RDA) are there to help users identify potential differences across platforms. They do not replace or supersede the official rules and description of any prediction market. Users are solely responsible for reviewing and understanding the applicable rules and resolution criteria before placing any trade or bet. If you notice a potential inconsistency, discrepancy, or error in an alert, please report it to our team so we can review and improve the accuracy of our data.

Polymarket

The 2026 Osaka, Japan tennis tournament is scheduled for October 17–25, 2026. This market will resolve to the player that wins the 2026 Osaka, Japan Women’s Singles Tournament. If at any point it becomes impossible for a listed player to win the 2026 Osaka, Japan Women’s Singles Tournament per the rules of the tournament, the corresponding market will resolve to "No". If a player who is not listed wins the 2026 Osaka, Japan Women’s Singles Tournament, this market will resolve to "Other". If the 2026 Osaka, Japan Women’s Singles Tournament is cancelled, postponed after November 8, 2026, 11:59 PM ET, or there is otherwise no winner declared within that timeframe, this market will resolve to "Other". The primary resolution source will be official information from WTA (https://www.wtatennis.com/scores); however, a consensus of credible reporting may also be used.

Kalshi

If Ann Li wins the 2026 WTA Osaka professional tennis tournament, then the market resolves to Yes. If Peyton Stearns wins the 2026 WTA Osaka professional tennis tournament, then the market resolves to Yes. If Kimberly Birrell wins the 2026 WTA Osaka professional tennis tournament, then the market resolves to Yes. If Talia Gibson wins the 2026 WTA Osaka professional tennis tournament, then the market resolves to Yes. If Liudmila Samsonova wins the 2026 WTA Osaka professional tennis tournament, then the market resolves to Yes. If Janice Tjen wins the 2026 WTA Osaka professional tennis tournament, then the market resolves to Yes. If Oleksandra Oliynykova wins the 2026 WTA Osaka professional tennis tournament, then the market resolves to Yes. If Katie Boulter wins the 2026 WTA Osaka professional tennis tournament, then the market resolves to Yes. If Lilli Tagger wins the 2026 WTA Osaka professional tennis tournament, then the market resolves to Yes. If Paula Badosa wins the 2026 WTA Osaka professional tennis tournament, then the market resolves to Yes. If Zeynep Sonmez wins the 2026 WTA Osaka professional tennis tournament, then the market resolves to Yes. If Lanlana Tararudee wins the 2026 WTA Osaka professional tennis tournament, then the market resolves to Yes. If Tereza Valentova wins the 2026 WTA Osaka professional tennis tournament, then the market resolves to Yes. If Ashlyn Krueger wins the 2026 WTA Osaka professional tennis tournament, then the market resolves to Yes. If Catherine McNally wins the 2026 WTA Osaka professional tennis tournament, then the market resolves to Yes. If Viktorija Golubic wins the 2026 WTA Osaka professional tennis tournament, then the market resolves to Yes. If Sinja Kraus wins the 2026 WTA Osaka professional tennis tournament, then the market resolves to Yes. If Kaitlin Quevedo wins the 2026 WTA Osaka professional tennis tournament, then the market resolves to Yes. If Magda Linette wins the 2026 WTA Osaka professional tennis tournament, then the market resolves to Yes. If Shuai Zhang wins the 2026 WTA Osaka professional tennis tournament, then the market resolves to Yes. If Katerina Siniakova wins the 2026 WTA Osaka professional tennis tournament, then the market resolves to Yes. If Maya Joint wins the 2026 WTA Osaka professional tennis tournament, then the market resolves to Yes. If Antonia Ruzic wins the 2026 WTA Osaka professional tennis tournament, then the market resolves to Yes. If Claire Liu wins the 2026 WTA Osaka professional tennis tournament, then the market resolves to Yes. If Harriet Dart wins the 2026 WTA Osaka professional tennis tournament, then the market resolves to Yes. If Mary Stoiana wins the 2026 WTA Osaka professional tennis tournament, then the market resolves to Yes. If Himeno Sakatsume wins the 2026 WTA Osaka professional tennis tournament, then the market resolves to Yes. If Moyuka Uchijima wins the 2026 WTA Osaka professional tennis tournament, then the market resolves to Yes. If Emerson Jones wins the 2026 WTA Osaka professional tennis tournament, then the market resolves to Yes. If Mai Hontama wins the 2026 WTA Osaka professional tennis tournament, then the market resolves to Yes. If Sonay Kartal wins the 2026 WTA Osaka professional tennis tournament, then the market resolves to Yes. If Ena Shibahara wins the 2026 WTA Osaka professional tennis tournament, then the market resolves to Yes.