TOTAL VOLUME:

$134.2b

24H VOL:

$130,522,377

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,438,389,636

404,028

Markets across

30,214

events

MATCHED EVENTS:

2,681

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

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Phan Thiet 4: Ethan Cook vs Hunter Heck
polymarket
kalshi

Who will win Ethan Cook vs Hunter Heck?

Volume:
$37,524

Completed Match

 - Polymarket

Completed Match - Polymarket

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Sep 13, 2026

Closed: Sep 13, 2:06 AM EST

polymarket

Polymarket

View
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
polymarket

Completed Match

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$3,960
N/A
N/A
N/A
Settled
Yes
kalshi

Fight ends before round 3

View
0%
Yes 0¢No 100¢
100¢
N/A
$13,719
N/A
N/A
$10,551
Settled
No
polymarket

Phan Thiet 4: Ethan Cook vs Hunter Heck

View
0%
Yes 0¢No 100¢
—
N/A
$12,900
N/A
N/A
N/A
Settled
Yes
kalshi

Fight ends before round 2

View
0%
35%
Yes 0¢No 100¢
100¢
N/A
$6,946
N/A
N/A
$6,404
Settled
No
Total markets: 4

Description

This group covers the tennis match between Ethan Cook and Hunter Heck in the Phan Thiet 4 Qualifying tournament. The markets aim to predict the winner of the match, with considerations for cancellations, retirements, and default outcomes.

PredictionHero - Resolution Divergence Alerts (RDA)

Divergence Detected

Issue: The platforms diverge on how an incomplete match (due to retirement, default, or walkover) is resolved. Polymarket resolves to the advancing player, while Kalshi resolves to 'No'.Hero tip: Avoid strong directional bets if a retirement or default seems probable. Consider hedging or focusing on the 'match completion' markets if available.

Critical divergence points:

  • Polymarket: Resolves to the player who advances if the match is not completed through normal play, including retirement or default. "This market will resolve to 'Ethan Cook' if Ethan Cook advances against Hunter Heck."
  • Kalshi: Resolves to 'No' if the match is not completed for any reason, including retirement or default. "This market will resolve "No." if a forfeit of any kind occurs, including but not limited to a walkover or retirement."
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 Ethan Cook and Hunter Heck in the Phan Thiet 4, Vietnam, Qualifying, originally scheduled for September 13, 2026 at 12:10AM ET. This market will resolve to 'Ethan Cook' if Ethan Cook advances against Hunter Heck. This market will resolve to 'Hunter Heck' if Hunter Heck advances against Ethan Cook. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 27, 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

Markets resolve to Yes if the fight ends before Round 2 or before Round 3. Kalshi disclaims official affiliation with the Governing League, and all trademarks remain property of their respective owners.

Frequently asked questions

Prediction market odds, like those found for this market, often reflect the collective wisdom of a diverse group of traders, potentially offering a different perspective than traditional sportsbooks. Sportsbooks set lines based on their own models and aim to balance action on both sides, while prediction markets allow anyone to express their belief about the outcome. This can lead to discrepancies, especially when public sentiment strongly diverges from expert opinion. However, both aim to accurately forecast the probability of events, and arbitrage opportunities can emerge when significant differences arise between the two.

Prices for this market may differ between Polymarket and Kalshi due to a variety of factors. 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. Each platform has its own user base, trading fees, and liquidity, which can all influence price discovery. Furthermore, the specific mechanisms for trading and market making on each platform can lead to variations in how quickly information is incorporated into prices. Differences in the types of traders participating on each platform – for example, more sophisticated or informed traders on one versus the other – can also contribute to price divergence. These differences can create opportunities for traders to exploit arbitrage.

Several signals or events could significantly move this market before it resolves. Any news regarding the physical condition of Ethan Cook or Hunter Heck, such as injuries or illness, would likely impact the odds. Changes in weather conditions at the event location could also be a factor. Additionally, any public statements from either athlete or their teams regarding their strategy or confidence levels could influence trader sentiment. Finally, large volume trades on either Polymarket or Kalshi could indicate informed trading activity and trigger price movements.