TOTAL VOLUME:
$134.1b
24H VOL:
$141,541,542
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,440,096,988
406,065
Markets across
30,522
events
MATCHED EVENTS:
2,692
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 28, 4:00 AM EST
Polymarket
This market refers to the doubles tennis match between Vasa/Vasa and Ponchet/Poulsen in the Tampere, originally scheduled for July 21, 2026 at 4:00AM ET. This market will resolve to 'Vasa/Vasa' if the team of Vasa/Vasa advances against Ponchet/Poulsen. This market will resolve to 'Ponchet/Poulsen' if the team of Ponchet/Poulsen advances against Vasa/Vasa. 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 team advances due to the opponent's retirement, default, or disqualification, this market will resolve to the team who advances. If the match ends in a walkover (a team 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 doubles tennis match between Vasa/Vasa and Ponchet/Poulsen in the Tampere, originally scheduled for July 21, 2026 at 4:00AM ET. This market will resolve to 'Vasa/Vasa' if the team of Vasa/Vasa advances against Ponchet/Poulsen. This market will resolve to 'Ponchet/Poulsen' if the team of Ponchet/Poulsen advances against Vasa/Vasa. 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 team advances due to the opponent's retirement, default, or disqualification, this market will resolve to the team who advances. If the match ends in a walkover (a team 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 traditional sportsbook odds often diverge because they reflect different participant bases and incentive structures. Sportsbooks set lines to balance action and protect their margins, while prediction markets aggregate the beliefs of traders risking real capital on outcomes. For this market, comparing the implied probability from prediction market prices to sportsbook spreads can reveal where informed traders see value. Many bettors monitor both venues to identify discrepancies, though prediction markets tend to update faster as new information emerges during the event window.
On Polymarket, this market is priced through an automated market maker that converts trader orders into real-time odds. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The current implied probability reflects the aggregate belief of all participants holding positions. As traders buy or sell shares in either outcome, the price adjusts mechanically to balance supply and demand. This continuous repricing mechanism means odds can shift rapidly in response to new information, breaking news, or large trades, making the market responsive to changing expectations about the match result.
This market resolves around Jul 28, 2026, once the Tampere doubles match concludes and the result is verifiable from credible public reporting. The outcome is determined by which pair wins the match according to official tournament records. Until that point, traders can adjust positions based on player form, injury updates, or other developments. Resolution is automatic once the event is confirmed, settling all positions based on the final verified result.
Several factors could shift prices before Jul 28, 2026. Player injuries or withdrawals announced before the match would trigger sharp repricing. Recent tournament results, head-to-head records, and court surface performance data may influence trader sentiment. Weather conditions at the venue, seeding changes, or lineup adjustments could also prompt significant moves. Real-time match developments—such as early set outcomes or momentum swings—typically generate the largest price swings as traders update their expectations based on live performance.