TOTAL VOLUME:
$134.1b
24H VOL:
$133,388,117
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,436,095,462
405,232
Markets across
30,526
events
MATCHED EVENTS:
2,693
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 21, 7:59 PM EST
Polymarket
This market refers to the tennis match between Chanel Janssen and Tasnim Ismail in the ITF Women Monastir, originally scheduled for July 14, 2026 at 7:59PM ET. This market will resolve to 'Chanel Janssen' if Chanel Janssen advances against Tasnim Ismail. This market will resolve to 'Tasnim Ismail' if Tasnim Ismail advances against Chanel Janssen. If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, 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 Chanel Janssen and Tasnim Ismail in the ITF Women Monastir, originally scheduled for July 14, 2026 at 7:59PM ET. This market will resolve to 'Chanel Janssen' if Chanel Janssen advances against Tasnim Ismail. This market will resolve to 'Tasnim Ismail' if Tasnim Ismail advances against Chanel Janssen. If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, 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 and sportsbook odds often diverge because they reflect different mechanisms. Sportsbooks set lines to balance action and protect their margin, while prediction markets are driven purely by trader supply and demand. On Polymarket, prices emerge from real-money bets by participants with direct interest in the outcome, which can reveal information that sportsbooks have not yet priced in. Comparing the two can highlight where the crowd sees value or where consensus differs. Neither is inherently more accurate, but the differences often signal where sharp traders are positioning themselves.
On Polymarket, this market is priced through an automated market maker that converts trader orders into real-time probabilities. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. As traders buy or sell shares representing each outcome, the price adjusts continuously to reflect the latest consensus. The cost to buy a share rises as more traders back that outcome, and falls if they sell. This mechanism ensures prices stay responsive to new information and trader conviction, creating a dynamic forecast that updates throughout the market's lifespan.
This market resolves around Jul 21, 2026, once the match concludes and the result is verifiable from credible public reporting. The outcome will be confirmed based on the official match result, ensuring accuracy and fairness for all traders. Until that time, prices will fluctuate as new information emerges—such as player form, injury updates, or head-to-head records—that may shift trader expectations. Resolution is final once the event is settled, and payouts are distributed according to the winning outcome.
Several factors could shift prices before resolution. Recent player performance, ranking changes, or tournament results involving either competitor may influence trader confidence. Injury reports or withdrawal announcements would trigger sharp repricing. Head-to-head history and surface preference also matter in tennis, so any new data on those fronts could move the odds. Media coverage and expert commentary may sway sentiment, while betting patterns from professional traders often signal where informed money is flowing. Close to the match date, weather conditions and court conditions could become relevant catalysts as well.