TOTAL VOLUME:
$134.2b
24H VOL:
$126,324,530
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,434,646,834
406,019
Markets across
30,401
events
MATCHED EVENTS:
2,689
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 18, 9:00 AM EST
Polymarket
This market refers to the tennis match between Artemis Aslanisvili and Madison Sieg in the Athens Open, Qualification, originally scheduled for July 11, 2026 at 9:00AM ET. This market will resolve to 'Artemis Aslanisvili' if Artemis Aslanisvili advances against Madison Sieg. This market will resolve to 'Madison Sieg' if Madison Sieg advances against Artemis Aslanisvili. 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 WTA Tour. A consensus of credible reporting may also be used.
This market refers to the tennis match between Artemis Aslanisvili and Madison Sieg in the Athens Open, Qualification, originally scheduled for July 11, 2026 at 9:00AM ET. This market will resolve to 'Artemis Aslanisvili' if Artemis Aslanisvili advances against Madison Sieg. This market will resolve to 'Madison Sieg' if Madison Sieg advances against Artemis Aslanisvili. 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 WTA Tour. A consensus of credible reporting may also be used.
Prediction market odds and sportsbook odds often diverge because they reflect different participant bases and incentive structures. Sportsbooks set lines to balance action and protect their margins, while prediction markets aggregate the beliefs of traders risking real capital on outcomes. Prediction markets can sometimes offer sharper, more efficient pricing because traders have direct financial exposure and no house edge to protect. Comparing this market's odds to major sportsbook lines can reveal whether one venue perceives higher or lower probability than the other, though both sources provide valuable signals.
On Polymarket, this market is priced through an automated market maker that converts trader orders into real-time odds. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Shares representing each outcome trade continuously, and the current price reflects the cumulative bets placed by all participants. As more traders buy or sell a given outcome, the price adjusts to balance supply and demand. This mechanism ensures liquidity and allows you to enter or exit positions without waiting for a counterparty, though larger trades may move the price more significantly.
This market resolves around Jul 18, 2026, once the match concludes and the result is verifiable from credible public reporting. The outcome will reflect which player wins the qualification round. Until that point, traders can continue to buy and sell shares as new information—such as player form, injury updates, or head-to-head records—becomes available. Early resolution is possible if circumstances prevent the match from taking place as scheduled.
Several factors could shift trader sentiment before Jul 18, 2026. Injury announcements or fitness updates for either player would likely trigger sharp price moves. Recent tournament results, head-to-head records, and performance on similar court surfaces can influence confidence in each outcome. Betting patterns from professional or sharp bettors may also signal new information. Weather conditions, draw strength, and momentum from earlier rounds could sway the market as the event approaches. Monitor official tournament updates and player news for catalysts that reshape the implied probabilities.