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National Bank Open: Aryna Sabalenka vs Ekaterina Alexandrova
polymarket
kalshi

National Bank Open: Aryna Sabalenka vs Ekaterina Alexandrova

Total volume:
$1,915,877
Volume 24h:
$328,976
450%
Liquidity:
$0
100%
Open interest:
$798,014
10%

Aryna Sabalenka

 - Kalshi

Aryna Sabalenka - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolves Sep 13, 2026

Time left: 16d:21h:12m

Will Aryna Sabalenka win the US Open Women's Singles?

22%chance
Amount

$

Trade on
kalshi

Trade on Kalshi

Join Kalshi and score $25 for your first trade.At 22¢ buys you 455 shares | Odds: 22% Total Payout: $455 | Net Profit: $355 Multiplier: 4.55x | ROI: 355% 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
kalshi

Aryna Sabalenka

Trade
22%
Yes 22¢No 79¢
1¢
N/A
$53,427
8%
58%
$34,875
2w 2d 21h
active
kalshi

Coco Gauff

Trade
15%
Yes 15¢No 86¢
1¢
N/A
$164,736
17%
229%
$127,621
2w 2d 21h
active
kalshi

Iga Swiatek

Trade
15%
1%
Yes 15¢No 86¢
1¢
N/A
$82,305
2%
53%
$54,349
2w 2d 21h
active
kalshi

Naomi Osaka

Trade
8%
Yes 9¢No 92¢
1¢
N/A
$54,192
3%
44%
$44,937
2w 2d 21h
active
kalshi

Elena Rybakina

Trade
7%
Yes 7¢No 94¢
1¢
N/A
$89,465
11%
260%
$51,779
2w 2d 21h
active
kalshi

Jessica Pegula

Trade
7%
Yes 7¢No 94¢
1¢
N/A
$37,929
12%
102%
$32,346
2w 2d 21h
active
kalshi

Mirra Andreeva

Trade
7%
Yes 7¢No 94¢
1¢
N/A
$12,237
5%
23%
$10,322
2w 2d 21h
active
kalshi

Amanda Anisimova

Trade
5%
Yes 5¢No 96¢
1¢
N/A
$39,644
2%
98%
$35,220
2w 2d 21h
active
kalshi

Marta Kostyuk

Trade
5%
Yes 5¢No 96¢
1¢
N/A
$24,063
2%
57%
$22,152
2w 2d 21h
active
kalshi

Alexandra Eala

Trade
4%
Yes 5¢No 96¢
1¢
N/A
$234,218
6%
52%
$200,808
2w 2d 21h
active
kalshi

Karolina Muchova

Trade
3%
Yes 3¢No 98¢
1¢
N/A
$50,018
64%
302%
$48,161
2w 2d 21h
active
kalshi

Linda Noskova

Trade
3%
Yes 3¢No 98¢
1¢
N/A
$13,428
18%
58%
$12,966
2w 2d 21h
active
kalshi

Madison Keys

Trade
2%
Yes 2¢No 99¢
1¢
N/A
$25,173
3%
59%
$23,141
2w 2d 21h
active
kalshi

Iva Jovic

Trade
2%
Yes 2¢No 99¢
1¢
N/A
$22,649
3%
17%
$20,677
2w 2d 21h
active
kalshi

Elina Svitolina

Trade
2%
Yes 3¢No 98¢
1¢
N/A
$11,885
2%
16%
$11,311
2w 2d 21h
active
kalshi

Barbora Krejcikova

Trade
2%
Yes 1¢No 100¢
1¢
N/A
$8,417
0%
20%
$8,026
2w 2d 21h
active
kalshi

Maria Sakkari

Trade
2%
Yes 1¢No 100¢
1¢
N/A
$5,576
0%
2%
$5,451
2w 2d 21h
active
kalshi

Paula Badosa

Trade
1%
Yes 1¢No 100¢
1¢
N/A
$16,343
1%
16%
$16,343
2w 2d 21h
active
kalshi

Qinwen Zheng

Trade
1%
Yes 1¢No 100¢
1¢
N/A
$11,510
0%
391%
$11,183
2w 2d 21h
active
kalshi

Emma Navarro

Trade
1%
Yes 1¢No 100¢
1¢
N/A
$7,455
0%
14%
$7,360
2w 2d 21h
active
kalshi

Maja Chwalinska

Trade
1%
Yes 1¢No 100¢
1¢
N/A
$7,159
0.12%
17%
$7,159
2w 2d 21h
active
kalshi

Victoria Mboko

Trade
1%
Yes 1¢No 100¢
1¢
N/A
$6,802
16%
79%
$6,765
2w 2d 21h
active
kalshi

Jasmine Paolini

Trade
1%
Yes 1¢No 100¢
1¢
N/A
$3,756
14%
96%
$3,732
2w 2d 21h
active
kalshi

Jelena Ostapenko

Trade
1%
Yes 1¢No 100¢
1¢
N/A
$1,328
0%
0%
$1,328
2w 2d 21h
active
polymarket

National Bank Open: Aryna Sabalenka vs Ekaterina Alexandrova Set 2 Winner

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$1,375
N/A
N/A
N/A
0d 0h 0m
Yes
Total markets: 25 of 39

Description

This group of markets covers the National Bank Open tennis match between Aryna Sabalenka and Ekaterina Alexandrova, originally scheduled for August 9, 2026. Markets include match outcome, set winners, game totals, and handicaps.

PredictionHero - Resolution Divergence Alerts (RDA)

Unified Resolution Criteria (Consistent across platforms)

All markets across Polymarket and Kalshi resolve using the same core logic based on official WTA statistics, with consistent handling of cancellations, retirements, and delays.Primary resolution logic: Official WTA match statistics

Core resolution logic:

  • Match outcome markets resolve to the player who advances, with 50-50 for cancellations, retirements, walkovers, or delays beyond 7 days
  • Set winner and game total markets resolve based on completed sets/games, with 50-50 if the relevant set/game is not completed
  • Handicap markets resolve based on final completed score, with 50-50 for incomplete matches

Edge cases & clarifications:

  • Retirement/Walkover: If a player retires or withdraws before the match starts, the advancing player wins the match market, and all set/game markets resolve 50-50
  • Delay Beyond 7 Days: If the match is delayed beyond 7 days from the scheduled date without a winner determined, all markets resolve 50-50
  • Super Tiebreaker: A super tiebreaker counts as one set for total set markets and one game for total game markets
Timing: Resolution occurs immediately after the official WTA match statistics are published, typically within 2 hours of the match conclusionOur 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 Aryna Sabalenka and Ekaterina Alexandrova in the National Bank Open, originally scheduled for August 9, 2026 at 10:00AM ET. This market will resolve to 'Aryna Sabalenka' if Aryna Sabalenka advances against Ekaterina Alexandrova. This market will resolve to 'Ekaterina Alexandrova' if Ekaterina Alexandrova advances against Aryna Sabalenka. If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, 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.

Kalshi

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