TOTAL VOLUME:

$114.5b

24H VOL:

$115,807,555

24H TRANSACTIONS:

1,362,287,844

OPEN INTEREST:

$1,188,566,556

336,771

Markets across

33,711

events

MATCHED EVENTS:

4,629

PLATFORM COVERAGE:

5

Polymarket:

42%

VS.

Kalshi:

58%

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

Who will win the 2026 Women's US Open tennis tournament?

Total volume:
$8,332,926
Volume 24h:
$255,364
58%
Liquidity:
$1,474,853
3%
Open interest:
$890,841
21%

Jessica Pegula

all

3 markets

Predict

Kalshi

Polymarket

consensus

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolves Sep 13, 2026

Time left: 16d:06h:01m

Will Jessica Pegula win the 2026 Women’s US Open?

52%chance
Amount

$

Trade on
predict

Trade on Predict

At 99.7¢ buys you 100 shares | Odds: 52% Total Payout: $100 | Net Profit: $0 Multiplier: 1.00x | ROI: 0.3% | APY: 7% 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
predict

Jessica Pegula

Trade
52%
2%
Yes 99.7¢No 95¢
94.7¢
$29,704
$17
0%
0%
N/A
2w 2d 6h
active
kalshi

Jessica Pegula

Trade
7%
Yes 8¢No 93¢
1¢
N/A
$44,658
29%
131%
$38,977
2w 2d 11h
active
polymarket

Jessica Pegula

Trade
6%
Yes 6.1¢No 94¢
0.1¢
$31,070
$128,190
0.98%
9%
N/A
2w 2d 6h
active
PredictionHero
Market Consensus
21.7%
Yes 37.9¢No 94¢
Avg: 31.9¢Max: 94.7¢
kalshi

Aryna Sabalenka

Trade
24%
2%
Yes 23¢No 78¢
1¢
N/A
$81,501
63%
138%
$62,949
2w 2d 11h
active
predict

Aryna Sabalenka

Trade
22%
Yes 23¢No 79¢
2¢
$32,453
$52,153
0.82%
2%
N/A
2w 2d 6h
active
polymarket

Aryna Sabalenka

Trade
22%
Yes 22¢No 79¢
1¢
$37,682
$82,990
13%
18%
N/A
2w 2d 6h
active
PredictionHero
Market Consensus
22.7%
Yes 22.7¢No 78.7¢
Avg: 1.3¢Max: 2¢
predict

Coco Gauff

Trade
16%
29%
Yes 18.8¢No 86¢
4.8¢
$1,066
$135
0%
0%
N/A
2w 2d 6h
active
kalshi

Coco Gauff

Trade
16%
1%
Yes 16¢No 86¢
2¢
N/A
$170,300
16%
239%
$133,057
2w 2d 11h
active
polymarket

Coco Gauff

Trade
16%
Yes 16.2¢No 84.7¢
0.9¢
$29,944
$92,271
25%
92%
N/A
2w 2d 6h
active
PredictionHero
Market Consensus
16%
Yes 17¢No 85.6¢
Avg: 2.6¢Max: 4.8¢
kalshi

Iga Swiatek

Trade
15%
1%
Yes 15¢No 86¢
1¢
N/A
$82,473
2%
50%
$54,517
2w 2d 11h
active
predict

Iga Swiatek

Trade
15%
Yes 15.1¢No 85.9¢
1¢
$35,574
$13,683
0.87%
3%
N/A
2w 2d 6h
active
polymarket

Iga Swiatek

Trade
14%
Yes 15¢No 86¢
1¢
$60,235
$57,102
3%
19%
N/A
2w 2d 6h
active
PredictionHero
Market Consensus
14.7%
Yes 15¢No 86¢
Avg: 1¢Max: 1¢
polymarket

Naomi Osaka

Trade
7%
Yes 7.4¢No 92.9¢
0.3¢
$37,263
$63,105
1%
72%
N/A
2w 2d 6h
active
kalshi

Naomi Osaka

Trade
7%
2%
Yes 7¢No 94¢
1¢
N/A
$70,924
34%
91%
$61,548
2w 2d 11h
active
predict

Naomi Osaka

Trade
7%
43%
Yes 9.5¢No 96.4¢
5.9¢
$20,186
$15
0%
0%
N/A
2w 2d 6h
active
PredictionHero
Market Consensus
7%
Yes 8¢No 94.4¢
Avg: 2.4¢Max: 5.9¢
kalshi

Mirra Andreeva

Trade
7%
Yes 7¢No 94¢
1¢
N/A
$12,268
5%
23%
$10,353
2w 2d 11h
active
polymarket

Mirra Andreeva

Trade
7%
Yes 6.9¢No 93.3¢
0.2¢
$27,798
$68,766
0.34%
16%
N/A
2w 2d 6h
active
predict

Mirra Andreeva

Trade
7%
Yes 9.4¢No 96.4¢
5.8¢
$29,850
$124
0%
0%
N/A
2w 2d 6h
active
PredictionHero
Market Consensus
7%
Yes 7.8¢No 94.6¢
Avg: 2.3¢Max: 5.8¢
polymarket

Elena Rybakina

Trade
7%
1%
Yes 6.8¢No 93.3¢
0.1¢
$32,887
$142,321
1%
29%
N/A
2w 2d 6h
active
predict

Elena Rybakina

Trade
6%
36%
Yes 8.4¢No 95.6¢
4¢
$30,438
$341
0%
4%
N/A
2w 2d 6h
active
kalshi

Elena Rybakina

Trade
6%
Yes 6¢No 95¢
1¢
N/A
$91,472
3%
267%
$53,518
2w 2d 11h
active
PredictionHero
Market Consensus
6.3%
Yes 7.1¢No 94.6¢
Avg: 1.7¢Max: 4¢
predict

Elina Svitolina

Trade
5%
94%
Yes 5.2¢No 94.8¢
—
$3,448
$251
0%
0%
N/A
2w 2d 6h
active
kalshi

Elina Svitolina

Trade
3%
Yes 3¢No 98¢
1¢
N/A
$14,916
26%
46%
$14,342
2w 2d 11h
active
polymarket

Elina Svitolina

Trade
2%
Yes 2.1¢No 98.2¢
0.3¢
$24,805
$46,705
3%
24%
N/A
2w 2d 6h
active
PredictionHero
Market Consensus
3.3%
Yes 3.4¢No 97¢
Avg: 0.7¢Max: 1¢
kalshi

Alexandra Eala

Trade
5%
Yes 5¢No 96¢
1¢
N/A
$236,093
10%
57%
$202,656
2w 2d 11h
active
Total markets: 25 of 104

Intro

This market tracks which player will win the 2026 Women's US Open Tennis Singles Tournament. Across Polymarket and Kalshi, the consensus probability for Aryna Sabalenka to claim the title stands at 29.0%, with Karolina Muchova at 18.0%. Resolution will be determined by the Official U.S. Open, with credible reporting as a secondary source. Watch for the tournament conclusion on September 13, 2026, which marks the final day of competition.

PredictionHero - Resolution Divergence Alerts (RDA)

Unified Resolution Criteria (Consistent across platforms)

All platforms use the same core logic: resolve to the official tournament winner, with specific handling for cancellations or delays beyond October 31, 2026.Primary resolution logic: Official information from the U.S. Open (https://www.usopen.org/index.html)

Core resolution logic:

  • If a listed player wins the 2026 Women’s US Open Singles Tournament, the corresponding market resolves to "Yes".
  • If the tournament is canceled, postponed after October 31, 2026, or no winner is declared by that date, markets resolve to "Other" (Polymarket/Predict) or remain unresolved until a winner is declared (Kalshi).
  • If a listed player becomes ineligible to win per tournament rules, their market resolves to "No".

Edge cases & clarifications:

  • Tournament Cancellation: If the tournament is canceled or no winner is declared by October 31, 2026, Polymarket and Predict resolve to "Other", while Kalshi markets remain open until a winner is officially declared, if any.
  • Player Ineligibility: If a listed player is disqualified or otherwise unable to compete before the tournament concludes, their market resolves to "No".
Timing: Resolution occurs after the official conclusion of the 2026 Women’s US Open Singles Tournament, with a deadline of October 31, 2026, for declaring a winner.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 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

A participant's market resolves to Yes if they win the 2026 US Open Women's Singles professional tennis tournament. If a participant forfeits, withdraws from consideration, or takes any official action that removes them from being able to win the tournament, their market resolves to No.

Predict

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.

Frequently asked questions

This dashboard aggregates real-time prediction market data on the Women's US Open tennis championship across Polymarket and Kalshi, two leading platforms for event contracts. Traders collectively assess which player will claim the title, with aggregate volume of $7,576,948 and 24-hour activity at $38,644. The consensus view reflects the crowd's belief about the tournament outcome, updated continuously as new information emerges. By tracking both platforms side-by-side, you can spot pricing divergence and identify where smart money is flowing before the event concludes.

Prediction markets and traditional sportsbooks price the same event differently because they operate under distinct incentive structures. Sportsbooks set odds to balance liability and extract a margin, while prediction markets aggregate trader beliefs through continuous price discovery. Prediction markets often reflect sharper, more dynamic pricing because participants risk real capital on outcomes. However, sportsbooks may move faster on breaking news due to dedicated trading desks. Comparing both sources helps identify mispriced opportunities and validates whether this market's consensus aligns with professional betting markets.

Polymarket and Kalshi can show different implied probabilities for the same outcome because of liquidity, fee structure, participant mix, and how each venue defines the contract. Platform differences stem from distinct user bases, liquidity pools, and contract specifications. Polymarket and Kalshi may attract traders with different risk tolerances, information sets, and time horizons. Liquidity concentration on one platform can cause its price to lag or lead the other, especially if one contract receives media attention or institutional flow. Regulatory frameworks and fee structures also influence how aggressively traders participate. Monitoring both venues reveals arbitrage signals and helps you understand which platform's pricing is more reliable for decision-making.

This market concludes on Sep 13, 2026. Resolution hinges on the official tournament result—specifically, which player wins the Women's US Open singles title. The outcome is determined by the match results and final champion as recognized by the United States Tennis Association and major sports data providers. Once the tournament concludes and the winner is confirmed, the market settles accordingly, and traders receive payouts based on their positions.

Player injuries, withdrawals, and form leading into the tournament are primary catalysts. Seeding announcements, head-to-head matchup draws, and recent Grand Slam results will shift trader sentiment. Off-court news—sponsorships, coaching changes, or personal circumstances—can also influence perception of a player's readiness. Court conditions and weather patterns at Flushing Meadows may favor certain playing styles. As the event approaches, each round's results will dramatically reprrice remaining contenders. Media coverage and betting flow from sportsbooks can amplify volatility, especially if an underdog makes a deep run.