TOTAL VOLUME:
$154.8b
24H VOL:
$277,138,640
24H TRANSACTIONS:
2,984,640,614
OPEN INTEREST:
$1,905,404,943
412,077
Markets across
39,838
events
MATCHED EVENTS:
4,526
PLATFORM COVERAGE:
5
Polymarket:
37%
VS.
Kalshi:
63%
Closed: Oct 11, 10:41 AM EST
Polymarket
This market refers to the tennis match between Javier Barranco Cosano and Ryan Nijboer in the Maia, Portugal, Qualifying, originally scheduled for October 11, 2026 at 6:10AM ET. This market will resolve to 'Javier Barranco Cosano' if Javier Barranco Cosano advances against Ryan Nijboer. This market will resolve to 'Ryan Nijboer' if Ryan Nijboer advances against Javier Barranco Cosano. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 25, 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 Javier Barranco Cosano and Ryan Nijboer in the Maia, Portugal, Qualifying, originally scheduled for October 11, 2026 at 6:10AM ET. This market will resolve to 'Javier Barranco Cosano' if Javier Barranco Cosano advances against Ryan Nijboer. This market will resolve to 'Ryan Nijboer' if Ryan Nijboer advances against Javier Barranco Cosano. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 25, 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.
Comparing prediction market odds to those offered by sportsbooks reveals how public perception differs from professional analysis. Sportsbooks set lines based on statistical models and expert opinions, while this market reflects the collective wisdom of a diverse group of traders. Often, prediction markets can offer more accurate forecasts, particularly when information isn't widely available, as traders can incorporate unique insights. Discrepancies between the two can highlight potential value opportunities for informed bettors, though it's important to consider the differing incentives and information sources driving each.
On Polymarket, this market is priced through a continuous auction mechanism where traders buy and sell shares representing their belief in the probability of a particular outcome. The price of these shares directly reflects the implied probability of that outcome occurring. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. As more traders participate, the price adjusts to reflect the collective assessment of the event's likelihood. This dynamic pricing ensures that the market remains responsive to new information and changing perspectives regarding the Maia chess match.
This market resolves around Oct 18, 2026, with the outcome confirmed once the result of the Maia chess match is verifiable from credible public reporting. The resolution will be based on the official result declared by the tournament organizers. The platform will then determine the winning share(s) and distribute payouts accordingly. Traders should monitor official sources for the match outcome to understand when the market will be settled and to ensure a clear understanding of the final result.
Several signals could significantly impact this market before resolution. Any news regarding the players' preparation, health, or recent performance would likely cause shifts in the odds. Unexpected announcements about the match format or venue could also influence trading activity. Furthermore, expert analysis or commentary on the players' strengths and weaknesses, and predictions from chess analysts, could sway market sentiment. Finally, large trades on Polymarket itself can create momentum and drive price movements, especially as Oct 18, 2026 approaches.