TOTAL VOLUME:

$134b

24H VOL:

$103,397,351

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,410,176,180

399,592

Markets across

30,097

events

MATCHED EVENTS:

2,622

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

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Winston-Salem Open: Daniel Altmaier vs Ignacio Buse
polymarket
kalshi

Winston-Salem Open: Daniel Altmaier vs Ignacio Buse

Volume:
$1,060,424

Alexander Zverev and Elena Rybakina

 - Kalshi

Alexander Zverev and Elena Rybakina - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Aug 26, 2026

Closed: Sep 13, 5:55 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

Alexander Zverev and Elena Rybakina

View
100%
43%
Yes 100¢No 0¢
100¢
N/A
$37,025
N/A
N/A
$20,064
Settled
Yes
polymarket

Winston-Salem Open: Daniel Altmaier vs Ignacio Buse Match O/U 22.5

100%
Yes 100¢No 0¢
0.1¢
N/A
$110
N/A
N/A
N/A
Settled
Yes
polymarket

Winston-Salem Open: Daniel Altmaier vs Ignacio Buse Set Handicap +/-1.5

100%
Yes 100¢No 0¢
0.1¢
N/A
$98
N/A
N/A
N/A
Settled
Yes
polymarket

Winston-Salem Open: Daniel Altmaier vs Ignacio Buse Match O/U 21.5

100%
Yes 100¢No 0¢
0.1¢
N/A
$30
N/A
N/A
N/A
Settled
Yes
polymarket

Winston-Salem Open: Daniel Altmaier vs Ignacio Buse Match O/U 23.5

100%
Yes 100¢No 0¢
0.1¢
N/A
$5
N/A
N/A
N/A
Settled
Yes
polymarket

Winston-Salem Open: Daniel Altmaier vs Ignacio Buse Game Spread +/-0.5

100%
Yes 100¢No 0¢
1¢
N/A
$4
N/A
N/A
N/A
Settled
Yes
polymarket

Winston-Salem Open: Daniel Altmaier vs Ignacio Buse

0%
Yes 0¢No 100¢
—
N/A
$304,582
N/A
N/A
N/A
Settled
Yes
kalshi

Carlos Alcaraz and Aryna Sabalenka

0%
Yes 0¢No 100¢
100¢
N/A
$146,265
N/A
N/A
$131,505
Settled
No
kalshi

Alexander Zverev and Aryna Sabalenka

0%
38%
Yes 0¢No 100¢
100¢
N/A
$122,253
N/A
N/A
$108,581
Settled
No
kalshi

Carlos Alcaraz and Coco Gauff

0%
Yes 0¢No 100¢
100¢
N/A
$101,047
N/A
N/A
$86,571
Settled
No
kalshi

Ben Shelton and Coco Gauff

0%
1%
Yes 0¢No 100¢
100¢
N/A
$83,514
N/A
N/A
$68,933
Settled
No
kalshi

Ben Shelton and Aryna Sabalenka

0%
31%
Yes 0¢No 100¢
100¢
N/A
$72,834
N/A
N/A
$63,978
Settled
No
kalshi

Ben Shelton and Elena Rybakina

0%
17%
Yes 0¢No 100¢
100¢
N/A
$50,890
N/A
N/A
$32,609
Settled
No
kalshi

Carlos Alcaraz and Elena Rybakina

0%
Yes 0¢No 100¢
100¢
N/A
$19,580
N/A
N/A
$18,746
Settled
No
kalshi

Alexander Zverev and Elina Svitolina

0%
Yes 0¢No 100¢
100¢
N/A
$16,441
N/A
N/A
$16,441
Settled
No
kalshi

Alexander Zverev and Coco Gauff

0%
1%
Yes 0¢No 100¢
100¢
N/A
$15,035
N/A
N/A
$11,480
Settled
No
kalshi

Carlos Alcaraz and Jessica Pegula

0%
Yes 0¢No 100¢
100¢
N/A
$10,182
N/A
N/A
$9,627
Settled
No
kalshi

Karen Khachanov and Elena Rybakina

0%
3%
Yes 0¢No 100¢
100¢
N/A
$8,681
N/A
N/A
$8,499
Settled
No
kalshi

Carlos Alcaraz and Iga Swiatek

0%
Yes 0¢No 100¢
100¢
N/A
$8,619
N/A
N/A
$7,558
Settled
No
kalshi

Frances Tiafoe and Aryna Sabalenka

0%
11%
Yes 0¢No 100¢
100¢
N/A
$7,651
N/A
N/A
$6,298
Settled
No
kalshi

Novak Djokovic and Coco Gauff

0%
1%
Yes 0¢No 100¢
100¢
N/A
$6,836
N/A
N/A
$6,779
Settled
No
kalshi

Frances Tiafoe and Coco Gauff

0%
4%
Yes 0¢No 100¢
100¢
N/A
$6,067
N/A
N/A
$6,067
Settled
No
kalshi

Frances Tiafoe and Elena Rybakina

0%
10%
Yes 0¢No 100¢
100¢
N/A
$4,404
N/A
N/A
$4,066
Settled
No
kalshi

Taylor Fritz and Iga Swiatek

0%
Yes 0¢No 100¢
100¢
N/A
$3,795
N/A
N/A
$3,795
Settled
No
kalshi

Ben Shelton and Jessica Pegula

0%
Yes 0¢No 100¢
100¢
N/A
$3,680
N/A
N/A
$3,098
Settled
No
Total markets: 25 of 104

Intro

This market tracks the probability of Alexander Zverev and Elena Rybakina both winning the 2026 US Open professional singles tennis tournaments. Currently, the aggregated probability across Polymarket and Kalshi indicates a 77.0% chance of this outcome. A secondary outcome, with Ben Shelton and Elena Rybakina both winning, is currently priced at 4.0%. Resolution will be determined based on the results of the 2026 US Open, as defined by the tournament organizers. Keep an eye on the Winston-Salem Open, as the Polymarket component of this aggregate currently includes a match between Daniel Altmaier and Ignacio Buse, impacting the overall consensus until the US Open draws closer.

PredictionHero - Resolution Divergence Alerts (RDA)

Divergence Detected

Issue: Fundamental Market Type Divergence - These are two entirely different markets with no logical connectionHero tip: These markets should not be treated as related. Verify you are participating in the correct market based on your intended bet - either the specific tennis match outcome or the US Open tournament pairings outcome

Critical divergence points:

  • Polymarket: Resolves based on the winner of the Daniel Altmaier vs Ignacio Buse match in the Winston-Salem Open, with specific rules for cancellations, retirements, and walkovers. Primary source is ATP Tour official information.
  • Kalshi: Resolves if specific pairs of players both win the 2026 US Open professional singles tournaments, with 80 distinct winning combinations listed. This is unrelated to the Winston-Salem Open match.
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 Daniel Altmaier and Ignacio Buse in the Winston-Salem Open, originally scheduled for August 26, 2026 at 2:00PM ET. This market will resolve to 'Daniel Altmaier' if Daniel Altmaier advances against Ignacio Buse. This market will resolve to 'Ignacio Buse' if Ignacio Buse advances against Daniel Altmaier. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 9, 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 ATP Tour. A consensus of credible reporting may also be used.

Kalshi

If Carlos Alcaraz and Aryna Sabalenka both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Carlos Alcaraz and Iga Swiatek both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Carlos Alcaraz and Coco Gauff both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Alexander Zverev and Aryna Sabalenka both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Alexander Zverev and Iga Swiatek both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Alexander Zverev and Coco Gauff both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Carlos Alcaraz and Naomi Osaka both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Novak Djokovic and Aryna Sabalenka both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Carlos Alcaraz and Elena Rybakina both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Carlos Alcaraz and Mirra Andreeva both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Ben Shelton and Aryna Sabalenka both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Carlos Alcaraz and Jessica Pegula both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Novak Djokovic and Iga Swiatek both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Alexander Zverev and Naomi Osaka both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Arthur Fils and Aryna Sabalenka both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Novak Djokovic and Coco Gauff both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Carlos Alcaraz and Alexandra Eala both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Alexander Zverev and Elena Rybakina both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Alexander Zverev and Mirra Andreeva both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Ben Shelton and Iga Swiatek both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Rafael Jodar and Aryna Sabalenka both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Ben Shelton and Coco Gauff both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Alexander Zverev and Jessica Pegula both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Arthur Fils and Iga Swiatek both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Carlos Alcaraz and Amanda Anisimova both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Carlos Alcaraz and Marta Kostyuk both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Taylor Fritz and Aryna Sabalenka both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Arthur Fils and Coco Gauff both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Rafael Jodar and Iga Swiatek both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Alexander Zverev and Alexandra Eala both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Rafael Jodar and Coco Gauff both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Carlos Alcaraz and Elina Svitolina both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Carlos Alcaraz and Karolina Muchova both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Carlos Alcaraz and Linda Noskova both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Taylor Fritz and Iga Swiatek both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Novak Djokovic and Naomi Osaka both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Alexander Zverev and Amanda Anisimova both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Alexander Zverev and Marta Kostyuk both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Taylor Fritz and Coco Gauff both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Novak Djokovic and Elena Rybakina both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Novak Djokovic and Mirra Andreeva both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Ben Shelton and Naomi Osaka both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Daniil Medvedev and Aryna Sabalenka both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Jakub Mensik and Aryna Sabalenka both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Novak Djokovic and Jessica Pegula both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Alexander Zverev and Elina Svitolina both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Alexander Zverev and Karolina Muchova both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Alexander Zverev and Linda Noskova both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Arthur Fils and Naomi Osaka both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Ben Shelton and Elena Rybakina both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Ben Shelton and Mirra Andreeva both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Carlos Alcaraz and Iva Jovic both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Carlos Alcaraz and Madison Keys both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Carlos Alcaraz and Paula Badosa both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Novak Djokovic and Alexandra Eala both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Arthur Fils and Elena Rybakina both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Arthur Fils and Mirra Andreeva both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Ben Shelton and Jessica Pegula both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Rafael Jodar and Naomi Osaka both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Daniil Medvedev and Iga Swiatek both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Jakub Mensik and Iga Swiatek both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Daniil Medvedev and Coco Gauff both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Jakub Mensik and Coco Gauff both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Arthur Fils and Jessica Pegula both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Rafael Jodar and Elena Rybakina both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Rafael Jodar and Mirra Andreeva both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Ben Shelton and Alexandra Eala both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Taylor Fritz and Naomi Osaka both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Alex de Minaur and Aryna Sabalenka both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Felix Auger-Aliassime and Aryna Sabalenka both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Flavio Cobolli and Aryna Sabalenka both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Frances Tiafoe and Aryna Sabalenka both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Learner Tien and Aryna Sabalenka both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Lorenzo Musetti and Aryna Sabalenka both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Tommy Paul and Aryna Sabalenka both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Novak Djokovic and Amanda Anisimova both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Novak Djokovic and Marta Kostyuk both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Carlos Alcaraz and Barbora Krejcikova both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Rafael Jodar and Jessica Pegula both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes. If Alexander Zverev and Iva Jovic both win the 2026 US Open professional singles tennis tournaments, then the market resolves to Yes.

Frequently asked questions

The dashboard for the Altmaier vs Buse match market aggregates real-time data from multiple venues, showing how traders across platforms price the likelihood of various outcomes. It displays current probabilities, volume of $1,060,424, and 24-hour volume of $332,720, offering a consensus view of market sentiment toward this matchup. This unified display helps users compare how Polymarket and Kalshi users evaluate the contest, reflecting collective wisdom around the performance expectations of both players.