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: Jul 11, 10:00 AM EST
Polymarket
This market refers to the tennis match between Aurora Zantedeschi and Madison Sieg in the ITF Women Aix-Les-Bains, originally scheduled for July 4, 2026 at 10:00AM ET. This market will resolve to 'Aurora Zantedeschi' if Aurora Zantedeschi advances against Madison Sieg. This market will resolve to 'Madison Sieg' if Madison Sieg advances against Aurora Zantedeschi. 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 Aurora Zantedeschi and Madison Sieg in the ITF Women Aix-Les-Bains, originally scheduled for July 4, 2026 at 10:00AM ET. This market will resolve to 'Aurora Zantedeschi' if Aurora Zantedeschi advances against Madison Sieg. This market will resolve to 'Madison Sieg' if Madison Sieg advances against Aurora Zantedeschi. 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 participant pools and incentive structures. Sportsbooks set lines to balance action and manage risk, while prediction markets like this one are driven by traders seeking profit through accurate forecasting. Prediction markets can sometimes offer sharper pricing because participants have direct financial exposure to outcomes. However, sportsbook odds benefit from professional oddsmakers and real-time adjustment. Comparing this market's implied probability to major sportsbook lines can reveal where the two communities disagree on the match's likely winner.
On Polymarket, this market is priced through an automated market maker that allows traders to buy or sell shares representing each outcome. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The price of each share reflects the collective belief of all traders participating in the market at that moment. As more traders buy shares for one outcome, its price rises and the implied probability increases. Conversely, selling pressure lowers the price. This continuous price discovery mechanism means the market adjusts dynamically based on new information, trading patterns, and sentiment shifts among participants.
This market resolves around Jul 11, 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—specifically, which player wins the contest. Resolution occurs after the event is complete and the winner has been publicly confirmed through reliable sports news sources or official tournament records. Until that point, the market remains open for trading as new information and developments influence trader sentiment.
Several factors could shift this market significantly before resolution. Player injuries, fitness updates, or withdrawal announcements would trigger immediate repricing. Recent tournament performance, head-to-head records, and surface-specific strengths matter for tennis markets. Court conditions, weather forecasts, and scheduling changes on match day can influence trader positioning. News about player form, coaching changes, or psychological momentum from recent matches also drives trading activity. Additionally, any official statements from the tournament or players regarding their readiness could prompt sharp moves in the odds as the market incorporates fresh information.