TOTAL VOLUME:
$134.1b
24H VOL:
$113,466,932
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,423,222,590
402,751
Markets across
30,217
events
MATCHED EVENTS:
2,632
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Sep 8, 6:41 AM EST
Polymarket
This market refers to the tennis match between Daniel Siniakov and Vitaliy Sachko in the Tulln, originally scheduled for September 8, 2026 at 4:00AM ET. This market will resolve to 'Daniel Siniakov' if Daniel Siniakov advances against Vitaliy Sachko. This market will resolve to 'Vitaliy Sachko' if Vitaliy Sachko advances against Daniel Siniakov. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 22, 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 Daniel Siniakov and Vitaliy Sachko in the Tulln, originally scheduled for September 8, 2026 at 4:00AM ET. This market will resolve to 'Daniel Siniakov' if Daniel Siniakov advances against Vitaliy Sachko. This market will resolve to 'Vitaliy Sachko' if Vitaliy Sachko advances against Daniel Siniakov. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 22, 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.
Prediction market odds often reflect the wisdom of the crowd, potentially differing from traditional sportsbook odds. Sportsbooks set lines based on their own models and risk management, while this market aggregates the beliefs of many individual traders. If a significant number of traders believe a sportsbook has mispriced the probability of a particular outcome in the Siniakov vs Sachko match, the prediction market odds may diverge. These differences can present opportunities for arbitrage or indicate areas where the crowd holds a different view than experts.
On Polymarket, this market is priced through a continuous auction mechanism where traders buy and sell shares representing their belief in the outcome of the Siniakov vs Sachko match. The price of these shares fluctuates based on supply and demand, effectively creating a probability estimate. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The closer the match gets, the more the price will reflect the perceived likelihood of each player winning, driven by new information and trader sentiment. The current price indicates what traders collectively believe is the probability of a specific outcome.
This market resolves around Sep 15, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The resolution will be based on the official result of the Siniakov vs Sachko match, as determined by the governing body of the tournament. The platform will verify the result against publicly available data to ensure accuracy and transparency. Traders who correctly predicted the outcome will receive a payout based on the final market price at resolution.
Several signals could influence this market before Sep 15, 2026. Any news regarding player injuries, changes in playing conditions, or strategic announcements from either Siniakov or Sachko could significantly shift trader sentiment. Unexpected results in other matches involving these players, or changes in expert analysis, might also impact the market. Increased media coverage or public discussion surrounding the match could also drive volume and price fluctuations as more people become aware of the opportunity to predict the outcome.