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24H VOL:

$134,145,987

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2,388,728,490

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$1,441,166,947

406,422

Markets across

30,383

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2,688

PLATFORM COVERAGE:

5

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US Open WTA: Naomi Osaka vs Katerina Siniakova
limitless
polymarket

What is the result of Naomi Osaka vs Katerina Siniakova?

Volume:
$208,411

US Open WTA: Naomi Osaka vs Katerina Siniakova

 - Polymarket

US Open WTA: Naomi Osaka vs Katerina Siniakova - Polymarket

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Sep 3, 2026

Closed: Sep 3, 6:50 PM EST

polymarket

Polymarket

View
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
polymarket

US Open WTA: Naomi Osaka vs Katerina Siniakova

View
100%
24%
Yes 100¢No 0¢
0.1¢
N/A
$204,085
N/A
N/A
N/A
Settled
Yes
limitless

Naomi Osaka vs Katerina Siniakova: 22 or more total games?

100%
Yes 100¢No 0¢
-0.1¢
N/A
$2,000
N/A
N/A
N/A
Settled
No
polymarket

US Open WTA: Naomi Osaka vs Katerina Siniakova Match O/U 21.5

100%
2%
Yes 100¢No 0¢
30¢
N/A
$252
N/A
N/A
N/A
Settled
Yes
polymarket

US Open WTA: Naomi Osaka vs Katerina Siniakova Game Spread +/-4.5

100%
2%
Yes 100¢No 0¢
—
N/A
$683
N/A
N/A
N/A
Settled
Yes
polymarket

Completed Match

100%
1%
Yes 100¢No 0¢
—
N/A
$303
N/A
N/A
N/A
Settled
Yes
polymarket

US Open WTA: Naomi Osaka vs Katerina Siniakova Total Sets: O/U 2.5

100%
Yes 100¢No 0¢
—
N/A
$18
N/A
N/A
N/A
Settled
Yes
polymarket

US Open WTA: Naomi Osaka vs Katerina Siniakova Match O/U 22.5

100%
49%
Yes 100¢No 0¢
—
N/A
$10
N/A
N/A
N/A
Settled
Yes
polymarket

US Open WTA: Naomi Osaka vs Katerina Siniakova Set 1 Winner

100%
28%
Yes 100¢No 0¢
0.1¢
N/A
$3
N/A
N/A
N/A
Settled
Yes
polymarket

US Open WTA: Naomi Osaka vs Katerina Siniakova Set 2 Winner

0%
57%
Yes 0¢No 100¢
9¢
N/A
$611
N/A
N/A
N/A
Settled
Yes
polymarket

US Open WTA: Naomi Osaka vs Katerina Siniakova Set Handicap +/-1.5

0%
Yes 0¢No 100¢
—
N/A
$448
N/A
N/A
N/A
Settled
Yes
polymarket

US Open WTA: Naomi Osaka vs Katerina Siniakova Set 2 O/U 8.5

100%
Yes 100¢No 0¢
19¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

US Open WTA: Naomi Osaka vs Katerina Siniakova Set 1 O/U 8.5

0%
67%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

US Open WTA: Naomi Osaka vs Katerina Siniakova Set 2 O/U 9.5

100%
1%
Yes 100¢No 0¢
19¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

US Open WTA: Naomi Osaka vs Katerina Siniakova Set 1 O/U 9.5

0%
53%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

US Open WTA: Naomi Osaka vs Katerina Siniakova Set 2 O/U 10.5

100%
Yes 100¢No 0¢
20¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

US Open WTA: Naomi Osaka vs Katerina Siniakova Set 1 O/U 10.5

0%
25%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

US Open WTA: Naomi Osaka vs Katerina Siniakova Match O/U 23.5

100%
49%
Yes 100¢No 0¢
—
N/A
N/A
N/A
N/A
N/A
Settled
Yes
Total markets: 17

Description

This group covers various markets related to the Naomi Osaka vs. Katerina Siniakova WTA US Open tennis match, scheduled for September 2, 2026. Markets include questions about the total games played, set winners, game spreads, and over/under lines for games in specific sets. Resolution relies primarily on official Grand Slam statistics.

PredictionHero - Resolution Divergence Alerts (RDA)

Divergence Detected

Issue: Cancellation and incomplete match resolution differ between platforms, particularly regarding retirement/default scenarios.Hero tip: Prioritize markets on platforms with more specific resolution rules for incomplete matches and player withdrawals to reduce ambiguity.

Critical divergence points:

  • Limitless: Incomplete matches and cancellations resolve to 50-50. No distinction made for retirement/default scenarios. 'If the match begins but is not completed, this market will resolve 50-50. If the match is canceled before play begins or delayed beyond 7 days from the scheduled date without a result, this market will also resolve 50-50.'
  • Polymarket: Cancellation, ties, or no winner by September 16th resolve to 50-50. Retirement/default/disqualification resulting in a player advancing resolves to that player winning. 'If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances.'
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

This market refers to the tennis match between Naomi Osaka and Katerina Siniakova in the US Open WTA, originally scheduled for September 2, 2026 at 11:00AM ET. This market will resolve to 'Naomi Osaka' if Naomi Osaka advances against Katerina Siniakova. This market will resolve to 'Katerina Siniakova' if Katerina Siniakova advances against Naomi Osaka. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 16, 2026, 11:59 PM ET (14 days after the scheduled start), this market will resolve to 50-50. If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances. If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50. The primary resolution source will be official information from the WTA Tour. A consensus of credible reporting may also be used.

Limitless

This market refers to the tennis match between Naomi Osaka and Katerina Siniakova in the WTA US Open, originally scheduled for September 2, 2026 at 15:00 UTC. This market will resolve to "YES" if the total number of games completed across all sets equals or exceeds 22. Otherwise, it will resolve to "NO." All tiebreaks—including any Champions/Super tiebreak—count as one (1) game toward the total. If the match begins but is not completed, this market will resolve 50-50. If the match is canceled before play begins or delayed beyond 7 days from the scheduled date without a result, this market will also resolve 50-50.

Frequently asked questions

On PredictionHero, this dashboard aggregates forecasts for the Osaka vs Siniakova match from multiple prediction markets, including Polymarket and Limitless. It provides a consensus view of potential outcomes, displaying current probabilities and trading volume across these platforms. Currently, the total volume for this market is $208,411, with $205,914 traded in the last 24 hours. This allows users to see where the 'wisdom of the crowd' currently stands on the likely result of the match and compare perspectives from different forecasting communities. The dashboard aims to provide a comprehensive overview of expectations for this tennis event.

Prediction market odds, like those displayed for this market, often reflect a different kind of information than traditional sportsbook odds. Sportsbooks typically set lines to balance betting action and incorporate a profit margin, while prediction markets are driven by individuals wagering their own capital based on their beliefs about the outcome. This can lead to prediction markets being more accurate, particularly when there is significant volume. However, sportsbook odds are readily available and often easier for the general public to understand. Examining both can provide a more well-rounded view of the probabilities surrounding the Osaka vs Siniakova match.

Polymarket and Limitless can show different implied probabilities for the same outcome because of liquidity, fee structure, participant mix, and how each venue defines the contract. Prices on Polymarket and Limitless may differ due to variations in user base, market design, and trading activity. Polymarket might attract a different type of trader than Limitless, leading to differing opinions being reflected in the prices. Furthermore, the specific market structures on each platform – such as the types of contracts offered and the fees charged – can influence trading behavior. It’s also possible that information is incorporated at different rates on each platform, causing temporary discrepancies in the perceived probabilities for this market.