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%
Closed: Jul 26, 8:00 AM EST
Polymarket
This market refers to the tennis match between Guy Den Ouden and Tom Gentzsch in the Bunschoten, originally scheduled for July 19, 2026 at 8:00AM ET. This market will resolve to 'Guy Den Ouden' if Guy Den Ouden advances against Tom Gentzsch. This market will resolve to 'Tom Gentzsch' if Tom Gentzsch advances against Guy Den Ouden. 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 ATP Tour. A consensus of credible reporting may also be used.
This market refers to the tennis match between Guy Den Ouden and Tom Gentzsch in the Bunschoten, originally scheduled for July 19, 2026 at 8:00AM ET. This market will resolve to 'Guy Den Ouden' if Guy Den Ouden advances against Tom Gentzsch. This market will resolve to 'Tom Gentzsch' if Tom Gentzsch advances against Guy Den Ouden. 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 ATP Tour. A consensus of credible reporting may also be used.
Prediction market odds and sportsbook odds often diverge because they reflect different participant bases and incentive structures. Sportsbooks set lines to balance action and protect their margin, while prediction markets aggregate the beliefs of traders risking real capital on outcomes. This market may show higher or lower implied probability than traditional sportsbooks, depending on whether informed traders see value the books have missed. Comparing the two can reveal where consensus differs and highlight potential analytical edges.
On Polymarket, this market is priced through an automated market maker that converts trader activity into real-time odds. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Shares representing each outcome trade continuously, and the price of each share reflects the collective probability assigned by active participants. As traders buy or sell, the price adjusts to balance supply and demand, ensuring the market remains responsive to new information and sentiment shifts throughout the trading period.
This market resolves around Jul 26, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The resolution hinges on whether the match concludes as scheduled and which fighter is declared the winner by the official result. Traders should monitor any postponements, cancellations, or disputes that could affect the final determination, as these factors may influence how the market settles.
Key catalysts include fighter training updates, injury announcements, weigh-in results, and any changes to the fight card or venue. Media coverage and expert analysis leading up to the bout can shift trader sentiment, as can odds movements from traditional sportsbooks. Social media activity, fighter statements, or unexpected withdrawals would likely trigger sharp repricing. Close to the event date, final odds from major sportsbooks and last-minute news could drive significant volume and volatility in this market.