TOTAL VOLUME:
$134.2b
24H VOL:
$130,522,377
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,438,389,636
404,028
Markets across
30,214
events
MATCHED EVENTS:
2,681
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Sep 3, 7:31 AM EST
Polymarket
This market refers to the tennis match between Kelly Keller and Johanna Silva in the W15 Monastir, Main Draw, originally scheduled for September 3, 2026 at 5:00AM ET. This market will resolve to 'Kelly Keller' if Kelly Keller advances against Johanna Silva. This market will resolve to 'Johanna Silva' if Johanna Silva advances against Kelly Keller. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 17, 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 Kelly Keller and Johanna Silva in the W15 Monastir, Main Draw, originally scheduled for September 3, 2026 at 5:00AM ET. This market will resolve to 'Kelly Keller' if Kelly Keller advances against Johanna Silva. This market will resolve to 'Johanna Silva' if Johanna Silva advances against Kelly Keller. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 17, 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 often reflect the collective wisdom of a diverse group of traders, and can sometimes differ from those offered by traditional sportsbooks. Sportsbooks set their odds based on models and risk assessment, while this market relies on individuals expressing their beliefs through trades. If there’s a significant discrepancy, it could indicate that the market believes the sportsbook has mispriced the probability of a particular outcome. It's important to remember that both represent probabilities, but are derived through different mechanisms and may appeal to different types of bettors.
On Polymarket, this market is priced through a continuous trading mechanism where users buy and sell shares representing their belief in the outcome of the Monastir tennis match. The price of these shares fluctuates based on supply and demand, effectively creating a real-time probability assessment. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. As more people buy shares in a particular outcome, its price increases, indicating a higher perceived chance of occurring. Conversely, increased selling pressure drives the price down. This dynamic pricing allows the market to quickly incorporate new information and adjust probabilities accordingly.
This market resolves around Sep 10, 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 Monastir tennis match between Kelly Keller and Johanna Silva, as reported by a recognized tennis authority. The platform will verify the result against these sources to determine which outcome corresponds to the actual event winner. Traders holding shares in the winning outcome will be entitled to a payout, while those holding shares in the losing outcome will forfeit their stake.
Several factors could influence trading activity and shift the odds in this market. Any news regarding player form, injuries, or changes in playing conditions could prompt traders to reassess their predictions. Unexpected results in other matches featuring either Kelly Keller or Johanna Silva might also impact sentiment. Furthermore, major shifts in public opinion or analysis from tennis experts could also drive trading volume and price fluctuations. Keep an eye on tennis news sources for updates that could potentially move this market before Sep 10, 2026.