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 10, 8:30 PM EST
Polymarket
This market refers to the doubles tennis match between Harper/Hilderbrand and Boulais/Maginley in the Cary, originally scheduled for July 3, 2026 at 8:30PM ET. This market will resolve to 'Harper/Hilderbrand' if the team of Harper/Hilderbrand advances against Boulais/Maginley. This market will resolve to 'Boulais/Maginley' if the team of Boulais/Maginley advances against Harper/Hilderbrand. 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 Harper/Hilderbrand and Boulais/Maginley in the Cary, originally scheduled for July 3, 2026 at 8:30PM ET. This market will resolve to 'Harper/Hilderbrand' if the team of Harper/Hilderbrand advances against Boulais/Maginley. This market will resolve to 'Boulais/Maginley' if the team of Boulais/Maginley advances against Harper/Hilderbrand. 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 markets and sportsbooks price events differently because they operate under distinct incentive structures. Sportsbooks set odds to balance their book and lock in profit margins, while prediction markets rely on trader consensus to discover prices. This market reflects what a broad community of informed participants believes will happen, often incorporating real-time information faster than traditional oddsmakers. Comparing this market's implied probability to major sportsbook lines can reveal where public opinion diverges from professional bookmaking estimates.
On Polymarket, traders set prices by buying and selling outcome shares in an automated market maker system. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Each share represents a claim on one team winning, and the price reflects the collective assessment of all active traders. As new information surfaces or trading volume shifts, prices adjust dynamically. The spread between bid and ask prices reflects liquidity and uncertainty; tighter spreads indicate higher confidence or deeper trading interest, while wider spreads suggest lower participation or genuine disagreement about the likely outcome.
This market resolves around Jul 11, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The winning team will be determined by the official match result. Traders holding shares in the winning outcome receive their payout, while those on the losing side forfeit their stake. Resolution timing depends on when the match concludes and results are published through authoritative sports sources.
Several factors may shift odds before this market closes. Injury announcements or roster changes involving either team can significantly alter expectations. Recent performance trends, head-to-head records, and court or surface conditions may influence trader positioning. Media coverage, expert commentary, and public betting patterns can also sway sentiment. Closer to the event, warm-up results, weather updates, or last-minute lineup adjustments often trigger repricing as new information becomes available and traders reassess their positions.