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: Sep 1, 9:15 AM EST
Polymarket
This market refers to the tennis match between Sebastian Heinrich and Julian DeSousa in the M15 Haren, Qualifying, originally scheduled for September 1, 2026 at 7:00AM ET. This market will resolve to 'Sebastian Heinrich' if Sebastian Heinrich advances against Julian DeSousa. This market will resolve to 'Julian DeSousa' if Julian DeSousa advances against Sebastian Heinrich. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 15, 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 player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances. If the match ends in a walkover (player 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 International Tennis Federation (ITF). A consensus of credible reporting may also be used.
This market refers to the tennis match between Sebastian Heinrich and Julian DeSousa in the M15 Haren, Qualifying, originally scheduled for September 1, 2026 at 7:00AM ET. This market will resolve to 'Sebastian Heinrich' if Sebastian Heinrich advances against Julian DeSousa. This market will resolve to 'Julian DeSousa' if Julian DeSousa advances against Sebastian Heinrich. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 15, 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 player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances. If the match ends in a walkover (player 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 International Tennis Federation (ITF). A consensus of credible reporting may also be used.
Prediction market odds in this market often differ from traditional sportsbook lines due to the decentralized nature of trader-driven pricing. While sportsbooks may set their odds based on broader public betting trends and analytical models, this market reflects the aggregated sentiment and insights of active participants on Polymarket, which can lead to sharper or more volatile pricing depending on new information or shifts in trader confidence.
On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. On Polymarket, traders manually set the odds through buying and selling shares, which determines the current implied probability for each possible outcome. The platform’s interface displays these live prices, allowing participants to react quickly to new data or changing expectations about the match. Volume of $3,210 over the last 24 hours reflects current interest and activity levels.
This market resolves around Sep 8, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The result is determined by the official match conclusion, and the platform will update the market accordingly based on confirmed sources.
Injuries, weather delays, or changes to player form could shift this market before Sep 8, 2026. Media coverage and betting trends on Polymarket may also reflect new information, influencing trader sentiment. As the match approaches, any last-minute updates — even minor ones — can cause rapid adjustments in odds and volume, so staying alert to news is key for tracking movement.