TOTAL VOLUME:
$134.2b
24H VOL:
$134,145,987
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,441,166,947
406,422
Markets across
30,383
events
MATCHED EVENTS:
2,688
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 21, 11:30 AM EST
Polymarket
This market refers to the tennis match between Guillaume Dalmasso and Aidan Mayo in the Granby, originally scheduled for July 14, 2026 at 11:30AM ET. This market will resolve to 'Guillaume Dalmasso' if Guillaume Dalmasso advances against Aidan Mayo. This market will resolve to 'Aidan Mayo' if Aidan Mayo advances against Guillaume Dalmasso. 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 Guillaume Dalmasso and Aidan Mayo in the Granby, originally scheduled for July 14, 2026 at 11:30AM ET. This market will resolve to 'Guillaume Dalmasso' if Guillaume Dalmasso advances against Aidan Mayo. This market will resolve to 'Aidan Mayo' if Aidan Mayo advances against Guillaume Dalmasso. 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 manage risk, while prediction markets aggregate the beliefs of traders risking real capital on outcomes. This market's odds may lead or lag traditional sportsbook pricing depending on which venue attracts sharper action first. Comparing the two can reveal where informed traders see value relative to conventional betting markets.
On Polymarket, this market is priced through an automated market maker that converts trader activity into real-time probabilities. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Buying shares for a given outcome raises its price; selling lowers it. The mechanism ensures continuous liquidity and transparent pricing, so you can enter or exit positions without waiting for a counterparty. Prices reflect the collective confidence of all active traders on the platform at any moment.
This market resolves around Jul 21, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The result will be determined by the official fight result as documented by recognized sports authorities and media coverage. Until that time, traders can continue to buy and sell shares as new information and analysis emerge.
Key catalysts include fighter training updates, injury reports, weigh-in results, and analyst commentary on technique or conditioning. Media coverage and social sentiment can shift trader positioning as fight day approaches. Odds from traditional sportsbooks and changes in betting patterns at other venues may also influence market participants. Close to the event, any last-minute news—from fighter statements to venue or rule changes—could trigger sharp repricing as traders reassess probabilities.