TOTAL VOLUME:
$134.2b
24H VOL:
$126,324,530
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,434,646,834
406,019
Markets across
30,401
events
MATCHED EVENTS:
2,689
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 14, 11:00 AM EST
Polymarket
This market refers to the doubles tennis match between Broadus/Collins and Daniel/Zamarripa in the Newport, originally scheduled for July 7, 2026 at 11:00AM ET. This market will resolve to 'Broadus/Collins' if the team of Broadus/Collins advances against Daniel/Zamarripa. This market will resolve to 'Daniel/Zamarripa' if the team of Daniel/Zamarripa advances against Broadus/Collins. 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 WTA Tour. A consensus of credible reporting may also be used.
This market refers to the doubles tennis match between Broadus/Collins and Daniel/Zamarripa in the Newport, originally scheduled for July 7, 2026 at 11:00AM ET. This market will resolve to 'Broadus/Collins' if the team of Broadus/Collins advances against Daniel/Zamarripa. This market will resolve to 'Daniel/Zamarripa' if the team of Daniel/Zamarripa advances against Broadus/Collins. 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 WTA Tour. A consensus of credible reporting may also be used.
Prediction market odds and sportsbook odds often diverge because they serve different purposes and operate under different constraints. Sportsbooks set lines to balance action and manage risk, while prediction markets reflect pure trader belief without the same profit-margin overlay. This market aggregates the collective judgment of independent traders rather than a single bookmaker's model. Over time, prediction markets have shown accuracy comparable to or better than traditional oddsmakers on sports outcomes, especially when liquidity is robust. Comparing this market's price to major sportsbooks can reveal where informed traders see value or disagreement.
On Polymarket, traders set the price of this market through an automated market maker (AMM) mechanism that adjusts odds based on order flow. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The platform converts all trades into a continuous probability estimate, so as more capital flows toward one outcome, the odds shift accordingly. Liquidity providers help stabilize the market, and the price you see reflects the marginal cost of moving the probability in either direction. This mechanism ensures transparent, real-time pricing without reliance on a centralized bookmaker.
This market resolves around Jul 14, 2026, once the Newport Doubles match concludes and the result is verifiable from credible public reporting. The outcome will be confirmed based on which team wins the match. Until that point, traders can buy and sell positions to adjust their exposure or lock in gains and losses. After resolution, the market will pay out according to the final result, and no further trading will be permitted.
Several factors could shift trader sentiment before resolution. Injury reports or player fitness updates about any of the four competitors may trigger repricing if a key player is compromised. Recent tournament form, head-to-head records, and court surface preference (grass at Newport) all influence expectations. News about player motivation, fatigue from prior matches, or coaching adjustments can also move the odds. Real-time match developments—such as early set outcomes or momentum shifts—will likely drive the most dramatic price swings as traders update their forecasts based on live performance.