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: Jul 22, 3:49 PM EST
Polymarket
This market refers to the doubles tennis match between Borges/Cabral and Reymond/Sanchez in the Estoril Open, originally scheduled for July 21, 2026 at 6:00AM ET. This market will resolve to 'Borges/Cabral' if the team of Borges/Cabral advances against Reymond/Sanchez. This market will resolve to 'Reymond/Sanchez' if the team of Reymond/Sanchez advances against Borges/Cabral. 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 Borges/Cabral and Reymond/Sanchez in the Estoril Open, originally scheduled for July 21, 2026 at 6:00AM ET. This market will resolve to 'Borges/Cabral' if the team of Borges/Cabral advances against Reymond/Sanchez. This market will resolve to 'Reymond/Sanchez' if the team of Reymond/Sanchez advances against Borges/Cabral. 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 sportsbook odds often diverge because they reflect different pricing mechanisms and participant bases. Sportsbooks set odds to balance liability and profit margins, while prediction markets aggregate trader beliefs through continuous price discovery. For this market, prediction market participants may price outcomes differently than traditional sportsbooks based on their collective assessment of player form, head-to-head records, and court conditions. Comparing the two can reveal where one venue sees value the other has missed, though both aim to reflect the true probability of the outcome.
On Polymarket, this market is priced through an automated market maker that converts trader activity into real-time odds for each outcome. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Traders buy and sell shares representing Borges/Cabral or Reymond/Sanchez, and the cumulative volume on each side determines the price. Higher trading volume on one outcome pushes its price up, reflecting increased confidence in that result. The mechanism incentivizes accurate pricing because traders profit by buying undervalued outcomes and selling overvalued ones, creating a self-correcting market.
This market resolves around Jul 28, 2026, once the doubles final concludes and the result is verifiable from credible public reporting. The outcome is determined by which team wins the match—either Borges/Cabral or Reymond/Sanchez. Traders holding shares in the winning outcome receive their payout, while incorrect positions expire worthless. The resolution process is straightforward because the event produces a definitive, publicly observable result that can be confirmed through official tournament records and sports media coverage.
Several factors could shift market prices before resolution. Injury announcements or withdrawals involving either team would trigger sharp repricing. Recent tournament results, player form, and head-to-head records against similar opponents may prompt traders to adjust their positions. Court surface conditions and weather forecasts specific to Estoril can influence doubles dynamics. Media coverage highlighting a player's recent performance or tactical insights may sway sentiment. As the match date approaches, any official updates from the tournament or player social media could accelerate trading volume and shift odds in either direction.