TOTAL VOLUME:
$134b
24H VOL:
$107,351,958
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,416,970,024
400,720
Markets across
30,097
events
MATCHED EVENTS:
2,633
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Sep 21, 12:35 PM EST
Polymarket
This market refers to the doubles tennis match between Nagy/Sebestova and Corley/Corley in the Porto, originally scheduled for September 21, 2026 at 10:30AM ET. This market will resolve to 'Nagy/Sebestova' if the team of Nagy/Sebestova advances against Corley/Corley. This market will resolve to 'Corley/Corley' if the team of Corley/Corley advances against Nagy/Sebestova. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 5, 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 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 WTA Tour. A consensus of credible reporting may also be used.
This market refers to the doubles tennis match between Nagy/Sebestova and Corley/Corley in the Porto, originally scheduled for September 21, 2026 at 10:30AM ET. This market will resolve to 'Nagy/Sebestova' if the team of Nagy/Sebestova advances against Corley/Corley. This market will resolve to 'Corley/Corley' if the team of Corley/Corley advances against Nagy/Sebestova. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 5, 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 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 WTA Tour. A consensus of credible reporting may also be used.
Typically, prediction market odds reflect a wisdom-of-the-crowd perspective, often differing from initial sportsbook lines. Sportsbooks set odds to balance their risk and profit margins, while this market aggregates the beliefs of many individual traders. If a significant amount of volume flows towards a particular outcome, the odds on Polymarket will shift accordingly, potentially surpassing the accuracy of traditional sportsbook offerings. It's common to see prediction markets outperform traditional odds, especially as new information emerges closer to the event.
On Polymarket, this market is priced through a continuous auction mechanism where traders buy and sell shares representing their belief in the outcome. The price of a share directly corresponds to the probability of that outcome occurring. As more traders participate, the price adjusts to reflect the collective assessment. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The market's price is determined entirely by supply and demand; traders who believe an outcome is more likely will bid up the price of shares representing that outcome, and vice versa. This creates a dynamic and responsive pricing system.
This market resolves around Sep 28, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The resolution will be based on the official result of the Porto doubles match between Nagy/Sebestova and Corley/Corley. The outcome will be determined by the official scoreline as reported by the governing tennis body. Traders will then be able to claim their winnings or adjust their strategies based on the verified result. It's important to monitor official sources for the final confirmation.
Several factors could influence the price of shares in this market. Any news regarding player form, injuries, or changes in playing conditions could significantly impact trader sentiment. Unexpected upsets in other matches leading up to the Porto doubles match could also shift expectations. Major shifts in public opinion, reflected in social media or sports news, might also drive volume and price movements. Ultimately, any information that alters the perceived probability of either team winning will likely cause fluctuations in this market.