TOTAL VOLUME:
$155.2b
24H VOL:
$325,717,424
24H TRANSACTIONS:
3,002,125,488
OPEN INTEREST:
$2,014,438,903
422,382
Markets across
39,948
events
MATCHED EVENTS:
4,398
PLATFORM COVERAGE:
5
Polymarket:
37%
VS.
Kalshi:
63%
Closed: Oct 25, 3:34 PM EST
Polymarket
This market refers to the tennis match between Daniil Ostapenkov and Quinn Vandecasteele in the Sioux Falls, USA, Qualifying, originally scheduled for October 25, 2026 at 12:10PM ET. This market will resolve to 'Daniil Ostapenkov' if Daniil Ostapenkov advances against Quinn Vandecasteele. This market will resolve to 'Quinn Vandecasteele' if Quinn Vandecasteele advances against Daniil Ostapenkov. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 8, 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 ATP Tour. A consensus of credible reporting may also be used.
This market refers to the tennis match between Daniil Ostapenkov and Quinn Vandecasteele in the Sioux Falls, USA, Qualifying, originally scheduled for October 25, 2026 at 12:10PM ET. This market will resolve to 'Daniil Ostapenkov' if Daniil Ostapenkov advances against Quinn Vandecasteele. This market will resolve to 'Quinn Vandecasteele' if Quinn Vandecasteele advances against Daniil Ostapenkov. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 8, 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 ATP Tour. A consensus of credible reporting may also be used.
Typically, prediction market odds offer a different perspective than those found at traditional sportsbooks. Sportsbooks often incorporate a 'vig' or commission into their odds, representing their profit margin. This market, driven by the collective wisdom of traders on Polymarket, aims to reflect the true probability of an outcome, though discrepancies can occur due to differing information or risk assessments. It’s common to see prediction markets move more efficiently based on new information than sportsbook odds, as they aren't constrained by a fixed margin.
On Polymarket, this market is priced through a continuous auction mechanism where traders buy and sell shares representing their belief in the likelihood of a specific outcome. The price of these shares directly reflects the implied probability. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. As more traders participate and new information becomes available, the price adjusts dynamically, providing a real-time assessment of the event’s potential results. The current implied probability of a particular player winning is reflected in the share price, and traders are constantly updating their positions based on their analysis.
This market resolves around Nov 1, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. Resolution will be based on the official result of the Sioux Falls tennis match, determining which player emerged victorious. The platform will rely on publicly available sources to verify the winner, ensuring a transparent and accurate settlement process. Traders will then be able to claim their winnings or adjust their strategies for future events.
Several factors could influence the odds in this market before resolution. Any news regarding player form, injuries, or changes in playing conditions could significantly shift trader sentiment. Unexpected upsets in other matches involving these players, or even broader trends in the tennis world, might also play a role. Furthermore, large trades on Polymarket by informed traders could cause noticeable price movements, reflecting their assessment of the evolving probabilities. Monitoring these signals will be key to understanding how this market evolves.