TOTAL VOLUME:
$134.1b
24H VOL:
$133,388,117
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,436,095,462
405,232
Markets across
30,526
events
MATCHED EVENTS:
2,693
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 19, 11:00 AM EST
Polymarket
This market refers to the doubles tennis match between Romboli/Smith and Reynolds/Watt in the Newport, originally scheduled for July 12, 2026 at 11:00AM ET. This market will resolve to 'Romboli/Smith' if the team of Romboli/Smith advances against Reynolds/Watt. This market will resolve to 'Reynolds/Watt' if the team of Reynolds/Watt advances against Romboli/Smith. 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 Romboli/Smith and Reynolds/Watt in the Newport, originally scheduled for July 12, 2026 at 11:00AM ET. This market will resolve to 'Romboli/Smith' if the team of Romboli/Smith advances against Reynolds/Watt. This market will resolve to 'Reynolds/Watt' if the team of Reynolds/Watt advances against Romboli/Smith. 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 trader bases and incentive structures. On prediction markets like Polymarket, participants stake real capital on outcomes, creating a direct financial incentive to forecast accurately. Sportsbooks, by contrast, balance action on both sides and adjust lines to manage risk. This market's odds may lead or lag sportsbook lines depending on which venue processes new information faster. Comparing the two can reveal whether professional bettors and prediction market traders agree on the likely outcome.
On Polymarket, this market is priced through an automated market maker that converts trader positions into real-time probabilities. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Traders buy and sell shares representing each outcome, and the cumulative order flow determines the odds you see displayed. As more capital flows toward one side, the price adjusts to reflect the updated consensus. The spread between bid and ask prices reflects current liquidity; tighter spreads indicate higher confidence and deeper trading interest.
This market resolves around Jul 19, 2026, once the match concludes and the result is verifiable from credible public sources. The outcome will be confirmed based on the official match result reported by recognized tennis authorities and media. Until that point, traders can adjust positions as new information emerges—such as player form, injury updates, or head-to-head records. Resolution is automatic once the event is final and the data is confirmed.
Several factors could shift odds before the match concludes. Player injuries, withdrawals, or late lineup changes would trigger immediate repricing. Recent tournament performance, court conditions at Newport, and head-to-head records between the pairs are key catalysts. News about player fitness, coaching changes, or unexpected upsets in related matches may also influence trader sentiment. As the event date approaches, any official announcements or credible reporting on player status will likely drive volume and volatility in this market.