TOTAL VOLUME:

$26.9b

24H VOL:

$53,643,865

24H TRANSACTIONS:

1,362,287,844

OPEN INTEREST:

$1,063,853,505

56,734

Markets across

1,194

events

MATCHED EVENTS:

96

PLATFORM COVERAGE:

4

Polymarket:

53%

VS.

Kalshi:

47%

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2026 Women’s US Open Winner (Tennis)
polymarket
kalshi

2026 Women’s US Open Winner (Tennis)

Total volume:
$7,429,506
Volume 24h:
$195,772
739%
Liquidity:
$1,314,058
6%
Open interest:
$213,582
62%

Iga Swiatek

all

2 markets

Polymarket

Kalshi

consensus

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolves Sep 13, 2026

Time left: 16d:14h:55m

Will Iga Swiatek win the 2026 Women’s US Open?

14%chance
Amount

$

Trade on
polymarket

Trade on Polymarket

At 15¢ buys you 667 shares | Odds: 14% Total Payout: $667 | Net Profit: $567 Multiplier: 6.67x | ROI: 567% APY not meaningful 16 days to resolution
You will be redirected to the platform to complete this trade.
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
polymarket

Iga Swiatek

Trade
14%
Yes 15¢No 86¢
1¢
$50,504
$56,049
0.89%
21%
N/A
2w 2d 14h
active
kalshi

Iga Swiatek

View
100%
Yes 100¢No 0¢
100¢
N/A
$139,192
N/A
N/A
$93,549
2d 8h 55m
No
PredictionHero
Market Consensus
57%
Yes 57.5¢No 43¢
Avg: 50.5¢Max: 100¢
polymarket

Aryna Sabalenka

Trade
22%
1%
Yes 23¢No 80¢
3¢
$36,512
$81,803
12%
22%
N/A
2w 2d 14h
active
polymarket

Coco Gauff

Trade
16%
Yes 16.4¢No 84.6¢
1¢
$27,493
$92,083
30%
103%
N/A
2w 2d 14h
active
polymarket

Naomi Osaka

Trade
7%
Yes 7.4¢No 92.8¢
0.2¢
$35,079
$62,450
0.22%
70%
N/A
2w 2d 14h
active
polymarket

Mirra Andreeva

Trade
7%
Yes 6.8¢No 93.3¢
0.1¢
$26,448
$68,072
8%
16%
N/A
2w 2d 14h
active
polymarket

Jessica Pegula

Trade
5%
Yes 5.5¢No 94.7¢
0.2¢
$33,912
$126,348
0.19%
8%
N/A
2w 2d 14h
active
polymarket

Amanda Anisimova

Trade
4%
Yes 4.2¢No 96¢
0.2¢
$25,328
$117,614
2%
50%
N/A
2w 2d 14h
active
polymarket

Alexandra Eala

Trade
4%
Yes 3.7¢No 96.5¢
0.2¢
$34,701
$311,391
2%
3%
N/A
2w 2d 14h
active
polymarket

Elena Rybakina

Trade
6%
Yes 6.5¢No 93.6¢
0.1¢
$28,319
$141,052
0.97%
27%
N/A
2w 2d 14h
active
kalshi

Elena Rybakina

View
0%
Yes 0¢No 100¢
100¢
N/A
$46,028
N/A
N/A
$37,898
2d 8h 55m
No
PredictionHero
Market Consensus
3%
Yes 3.3¢No 96.8¢
Avg: 50.1¢Max: 100¢
polymarket

Linda Noskova

Trade
2%
Yes 2.5¢No 97.6¢
0.1¢
$40,495
$37,347
2%
9%
N/A
2w 2d 14h
active
polymarket

Karolina Muchova

Trade
2%
Yes 2.1¢No 98¢
0.1¢
$33,395
$54,489
3%
11%
N/A
2w 2d 14h
active
polymarket

Elina Svitolina

Trade
2%
Yes 1.7¢No 98.4¢
0.1¢
$26,816
$45,443
0.23%
26%
N/A
2w 2d 14h
active
polymarket

Madison Keys

Trade
1%
Yes 1.4¢No 98.7¢
0.1¢
$21,030
$44,148
0.59%
36%
N/A
2w 2d 14h
active
polymarket

Barbora Krejcikova

Trade
1%
Yes 0.9¢No 99.2¢
0.1¢
$30,233
$557,689
0%
0.79%
N/A
2w 2d 14h
active
polymarket

Diana Shnaider

Trade
1%
Yes 0.8¢No 99.3¢
0.1¢
$39,802
$64,793
4%
9%
N/A
2w 2d 14h
active
polymarket

Belinda Bencic

Trade
1%
Yes 0.7¢No 99.4¢
0.1¢
$33,457
$82,726
6%
9%
N/A
2w 2d 14h
active
polymarket

Elise Mertens

Trade
1%
Yes 0.7¢No 99.4¢
0.1¢
$27,161
$60,546
3%
13%
N/A
2w 2d 14h
active
polymarket

Qinwen Zheng

Trade
1%
Yes 0.6¢No 99.6¢
0.2¢
$28,173
$283,704
3%
5%
N/A
2w 2d 14h
active
polymarket

Tereza Valentova

Trade
0%
Yes 0.5¢No 99.6¢
0.1¢
$28,663
$567,967
0.05%
0.22%
N/A
2w 2d 14h
active
polymarket

Ekaterina Alexandrova

Trade
0%
Yes 0.5¢No 99.6¢
0.1¢
$42,521
$60,671
0.43%
6%
N/A
2w 2d 14h
active
polymarket

Emma Navarro

Trade
0%
Yes 0.5¢No 99.6¢
0.1¢
$27,964
$58,690
0%
6%
N/A
2w 2d 14h
active
polymarket

Jasmine Paolini

Trade
0%
Yes 0.5¢No 99.6¢
0.1¢
$29,153
$40,143
0%
33%
N/A
2w 2d 14h
active
polymarket

Anastasia Potapova

Trade
0%
Yes 0.4¢No 99.7¢
0.1¢
$29,460
$452,386
0.57%
0.92%
N/A
2w 2d 14h
active
Total markets: 25 of 56

Description

This group of markets predicts which tennis player will win the Women’s Singles title at the 2026 US Open, a major tennis tournament scheduled for August 23 - September 13, 2026. The markets cover numerous named players, with additional markets for 'Other' winners and placeholder players (Player A-Z).

PredictionHero - Resolution Divergence Alerts (RDA)

Unified Resolution Criteria (Consistent across platforms)

All markets resolve based on the official winner of the 2026 US Open Women’s Singles tournament, with consistent rules for cancellations and impossibility cases.Primary resolution logic: Official US Open website (https://www.usopen.org/index.html); credible reporting may be used as a consensus if needed

Core resolution logic:

  • If a listed player wins the tournament, their market resolves to Yes; all others resolve to No
  • If the tournament is canceled, postponed after October 31, 2026, or no winner is declared, the Other market resolves to Yes and all player markets resolve to No
  • If a player becomes impossible to compete (injury, disqualification, etc.) before the tournament, their market resolves to No

Edge cases & clarifications:

  • Tournament Cancellation: All player markets resolve to No; Other market resolves to Yes
  • Player Impossibility: If a player is officially declared unable to compete before the tournament starts, their market resolves to No
Timing: Resolution occurs after the tournament concludes and the winner is officially declared, no later than November 1, 2026Our 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 U.S. Open tennis tournament is scheduled for August 23 - September 13, 2026. This market will resolve to the player that wins the 2026 U.S. Open Women’s Singles Tournament. If at any point it becomes impossible for a listed player to win the 2026 U.S. Open Women’s Singles Tournament per the rules of the tournament, the corresponding market will resolve to “No”. If the 2026 U.S. Open Women’s Singles Tournament is cancelled, postponed after October 31, 2026, 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 the U.S. Open (https://www.usopen.org/index.html); however, a consensus of credible reporting may also be used.

Kalshi

If Aryna Sabalenka wins the 2026 WTA Toronto professional tennis tournament, then the market resolves to Yes. If Elena Rybakina wins the 2026 WTA Toronto professional tennis tournament, then the market resolves to Yes. If Jessica Pegula wins the 2026 WTA Toronto professional tennis tournament, then the market resolves to Yes. If Coco Gauff wins the 2026 WTA Toronto professional tennis tournament, then the market resolves to Yes. If Iga Swiatek wins the 2026 WTA Toronto professional tennis tournament, then the market resolves to Yes. If Elina Svitolina wins the 2026 WTA Toronto professional tennis tournament, then the market resolves to Yes. If Amanda Anisimova wins the 2026 WTA Toronto professional tennis tournament, then the market resolves to Yes. If Marta Kostyuk wins the 2026 WTA Toronto professional tennis tournament, then the market resolves to Yes. If Naomi Osaka wins the 2026 WTA Toronto professional tennis tournament, then the market resolves to Yes. If Belinda Bencic wins the 2026 WTA Toronto professional tennis tournament, then the market resolves to Yes. If Diana Shnaider wins the 2026 WTA Toronto professional tennis tournament, then the market resolves to Yes. If Ekaterina Alexandrova wins the 2026 WTA Toronto professional tennis tournament, then the market resolves to Yes. If Alexandra Eala wins the 2026 WTA Toronto professional tennis tournament, then the market resolves to Yes. If Leylah Annie Fernandez wins the 2026 WTA Toronto professional tennis tournament, then the market resolves to Yes. If Liudmila Samsonova wins the 2026 WTA Toronto professional tennis tournament, then the market resolves to Yes. If Alina Korneeva wins the 2026 WTA Toronto professional tennis tournament, then the market resolves to Yes.