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US Open 2026: To Reach Semifinals (Women's Singles)
polymarket
kalshi

US Open 2026: To Reach Semifinals (Women's Singles)

Volume:
$75,668

Coco Gauff

all

2 markets

Kalshi

Polymarket

consensus

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Sep 9, 2026

Closed: Sep 9, 5:09 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

Coco Gauff

View
100%
32%
Yes 100¢No 0¢
100¢
N/A
$7,838
N/A
N/A
$5,619
Settled
Yes
polymarket

Coco Gauff

View
100%
36%
Yes 100¢No 0¢
0.1¢
N/A
$2,568
N/A
N/A
N/A
Settled
Yes
kalshi

Jessica Pegula

View
100%
19%
Yes 100¢No 0¢
100¢
N/A
$6,446
N/A
N/A
$4,310
Settled
Yes
polymarket

Jessica Pegula

View
100%
21%
Yes 100¢No 0¢
1¢
N/A
$244
N/A
N/A
N/A
Settled
Yes
kalshi

Aryna Sabalenka

View
100%
Yes 100¢No 0¢
100¢
N/A
$2,565
N/A
N/A
$1,983
Settled
Yes
polymarket

Aryna Sabalenka

View
100%
30%
Yes 100¢No 0¢
1¢
N/A
$889
N/A
N/A
N/A
Settled
Yes
polymarket

Elena Rybakina

View
100%
30%
Yes 100¢No 0¢
0.1¢
N/A
$2,382
N/A
N/A
N/A
Settled
Yes
kalshi

Elena Rybakina

View
100%
Yes 100¢No 0¢
100¢
N/A
$1,907
N/A
N/A
$1,593
Settled
Yes
kalshi

Alexandra Eala

View
0%
26%
Yes 0¢No 100¢
100¢
N/A
$8,063
N/A
N/A
$7,752
Settled
No
polymarket

Alexandra Eala

View
0%
Yes 0¢No 100¢
—
N/A
$1,469
N/A
N/A
N/A
Settled
No
kalshi

Iga Swiatek

View
0%
Yes 0¢No 100¢
100¢
N/A
$6,923
N/A
N/A
$5,143
Settled
No
polymarket

Iga Swiatek

View
0%
51%
Yes 0¢No 100¢
—
N/A
$5,484
N/A
N/A
N/A
Settled
No
polymarket

Emma Navarro

View
0%
21%
Yes 0¢No 100¢
—
N/A
$3,739
N/A
N/A
N/A
Settled
No
kalshi

Emma Navarro

View
0%
22%
Yes 0¢No 100¢
100¢
N/A
$616
N/A
N/A
$541
Settled
No
polymarket

Jasmine Paolini

View
0%
2%
Yes 0¢No 100¢
—
N/A
$3,289
N/A
N/A
N/A
Settled
No
kalshi

Jasmine Paolini

View
0%
38%
Yes 0¢No 100¢
100¢
N/A
$1,006
N/A
N/A
$1,006
Settled
No
kalshi

Amanda Anisimova

View
0%
36%
Yes 0¢No 100¢
100¢
N/A
$2,880
N/A
N/A
$2,880
Settled
No
polymarket

Amanda Anisimova

View
0%
15%
Yes 0¢No 100¢
—
N/A
$621
N/A
N/A
N/A
Settled
No
kalshi

Naomi Osaka

View
0%
Yes 0¢No 100¢
100¢
N/A
$2,368
N/A
N/A
$2,366
Settled
No
polymarket

Naomi Osaka

View
0%
95%
Yes 0¢No 100¢
—
N/A
$829
N/A
N/A
N/A
Settled
No
kalshi

Qinwen Zheng

View
0%
Yes 0¢No 100¢
100¢
N/A
$1,790
N/A
N/A
$1,753
Settled
No
polymarket

Elise Mertens

View
0%
2%
Yes 0¢No 100¢
—
N/A
$1,367
N/A
N/A
N/A
Settled
No
polymarket

Carol Young Suh Lee

View
0%
2%
Yes 0¢No 100¢
—
N/A
$1,006
N/A
N/A
N/A
Settled
No
kalshi

Mirra Andreeva

View
0%
Yes 0¢No 100¢
100¢
N/A
$936
N/A
N/A
$597
Settled
No
polymarket

Mirra Andreeva

View
0%
36%
Yes 0¢No 100¢
—
N/A
$680
N/A
N/A
N/A
Settled
No
Total markets: 25 of 64

Description

This event group tracks whether specific women's singles tennis players will reach the Semifinals at the 2026 US Open. Markets resolve based on official tournament results from the USTA and WTA.

PredictionHero - Resolution Divergence Alerts (RDA)

Unified Resolution Criteria (Consistent across platforms)

Both Kalshi and Polymarket use identical resolution logic: player reaches Semifinals per USTA/WTA rules, else No. Cancellation/postponement rules align across platforms.Primary resolution logic: Official USTA and WTA announcements, with credible reporting as secondary validation

Core resolution logic:

  • Market resolves to Yes only if the listed player is officially confirmed in the Semifinals by USTA/WTA
  • Market resolves to No if the player is eliminated before Semifinals or if the tournament is canceled/postponed past September 27, 2026
  • Resolution source: USTA/WTA official announcements; credible reporting may supplement if needed

Edge cases & clarifications:

  • Tournament Cancellation: If US Open is canceled or postponed beyond September 27, 2026, all markets resolve to No
  • Unconfirmed Semifinalists: If Semifinalists are not officially confirmed by USTA/WTA by September 27, 2026, markets resolve to No
Timing: Resolution occurs after official USTA/WTA confirmation of Semifinalists, no later than September 27, 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

This market will resolve to "Yes" if the listed player clinches a spot in the Semifinals at the 2026 US Open per US Open rules. Otherwise, the associated market will resolve to "No". If at any point it becomes impossible for the listed player to clinch a spot in the Semifinals at the 2026 US Open (e.g. the player is eliminated), the associated market will resolve to "No". If the 2026 US Open is cancelled, postponed after September 27, 11:59 PM ET, or the players that qualified for the Semifinals have not been officially confirmed by the USTA within that timeframe, this market will resolve to "No". The resolution source for this market will be official information from the USTA and WTA; however, a consensus of credible reporting may also be used.

Kalshi

If Iga Swiatek qualifies for the Semifinals at the 2026 US Open Women Singles tennis tournament, then the market resolves to Yes. If Aryna Sabalenka qualifies for the Semifinals at the 2026 US Open Women Singles tennis tournament, then the market resolves to Yes. If Coco Gauff qualifies for the Semifinals at the 2026 US Open Women Singles tennis tournament, then the market resolves to Yes. If Mirra Andreeva qualifies for the Semifinals at the 2026 US Open Women Singles tennis tournament, then the market resolves to Yes. If Elena Rybakina qualifies for the Semifinals at the 2026 US Open Women Singles tennis tournament, then the market resolves to Yes. If Elina Svitolina qualifies for the Semifinals at the 2026 US Open Women Singles tennis tournament, then the market resolves to Yes. If Qinwen Zheng qualifies for the Semifinals at the 2026 US Open Women Singles tennis tournament, then the market resolves to Yes. If Amanda Anisimova qualifies for the Semifinals at the 2026 US Open Women Singles tennis tournament, then the market resolves to Yes. If Madison Keys qualifies for the Semifinals at the 2026 US Open Women Singles tennis tournament, then the market resolves to Yes. If Jasmine Paolini qualifies for the Semifinals at the 2026 US Open Women Singles tennis tournament, then the market resolves to Yes. If Iva Jovic qualifies for the Semifinals at the 2026 US Open Women Singles tennis tournament, then the market resolves to Yes. If Karolina Muchova qualifies for the Semifinals at the 2026 US Open Women Singles tennis tournament, then the market resolves to Yes. If Jessica Pegula qualifies for the Semifinals at the 2026 US Open Women Singles tennis tournament, then the market resolves to Yes. If Barbora Krejcikova qualifies for the Semifinals at the 2026 US Open Women Singles tennis tournament, then the market resolves to Yes. If Emma Navarro qualifies for the Semifinals at the 2026 US Open Women Singles tennis tournament, then the market resolves to Yes. If Naomi Osaka qualifies for the Semifinals at the 2026 US Open Women Singles tennis tournament, then the market resolves to Yes. If Paula Badosa qualifies for the Semifinals at the 2026 US Open Women Singles tennis tournament, then the market resolves to Yes. If Victoria Mboko qualifies for the Semifinals at the 2026 US Open Women Singles tennis tournament, then the market resolves to Yes. If Marta Kostyuk qualifies for the Semifinals at the 2026 US Open Women Singles tennis tournament, then the market resolves to Yes. If Jelena Ostapenko qualifies for the Semifinals at the 2026 US Open Women Singles tennis tournament, then the market resolves to Yes. If Maja Chwalinska qualifies for the Semifinals at the 2026 US Open Women Singles tennis tournament, then the market resolves to Yes. If Maria Sakkari qualifies for the Semifinals at the 2026 US Open Women Singles tennis tournament, then the market resolves to Yes. If Linda Noskova qualifies for the Semifinals at the 2026 US Open Women Singles tennis tournament, then the market resolves to Yes. If Alexandra Eala qualifies for the Semifinals at the 2026 US Open Women Singles tennis tournament, then the market resolves to Yes.

Frequently asked questions

The dashboard for the US Open women's semifinals market aggregates real-time data from multiple platforms, showing how traders price the chances of different players reaching the final four. It displays current probabilities, volume of $75,668, and 24-hour volume of $6,609, letting you see consensus views and compare expectations across venues. This centralized view helps you spot shifts in sentiment as the tournament approaches, with all data updated live to reflect market activity.

Key signals that could shift probabilities in this market include major player injuries, changes in tournament seeding, high-profile early-round upsets, and evolving weather conditions at the venue. Media coverage highlighting a player's preparation or performance in lead-up tournaments can also influence trader sentiment and drive volume changes as the event draws closer.