TOTAL VOLUME:
$134.2b
24H VOL:
$126,590,312
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,439,516,703
404,175
Markets across
30,277
events
MATCHED EVENTS:
2,685
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 16, 4:00 AM EST
Polymarket
This market refers to the tennis match between Jeline Vandromme and Oksana Selekhmeteva in the Contrexeville, originally scheduled for July 9, 2026 at 4:00AM ET. This market will resolve to 'Jeline Vandromme' if Jeline Vandromme advances against Oksana Selekhmeteva. This market will resolve to 'Oksana Selekhmeteva' if Oksana Selekhmeteva advances against Jeline Vandromme. 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 Jeline Vandromme and Oksana Selekhmeteva in the Contrexeville, originally scheduled for July 9, 2026 at 4:00AM ET. This market will resolve to 'Jeline Vandromme' if Jeline Vandromme advances against Oksana Selekhmeteva. This market will resolve to 'Oksana Selekhmeteva' if Oksana Selekhmeteva advances against Jeline Vandromme. 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 serve different purposes and operate under different constraints. Sportsbooks set odds to balance liability and extract margin, while prediction markets aggregate trader beliefs through continuous price discovery. This market may reflect sharper or more current information than traditional sportsbooks, especially if professional traders and casual participants are actively pricing in recent form, injury updates, or court conditions. However, sportsbooks sometimes offer tighter spreads due to higher volume and established risk management. Comparing the two can reveal whether consensus leans toward one outcome or if meaningful disagreement exists about the likely result.
On Polymarket, traders set prices by buying and selling outcome shares in an automated market maker (AMM) system. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The price of each outcome reflects the cumulative belief of all participants: as more traders buy shares predicting a particular result, that outcome's price rises, and vice versa. This continuous mechanism ensures prices adjust in real time to new information, news, or betting patterns. Liquidity providers help maintain tight spreads, making it easier for traders to enter and exit positions. The system rewards accurate predictions and penalizes poor ones, creating incentives for informed trading and efficient price discovery.
This market resolves around Jul 16, 2026, once the match concludes and the result is verified against credible public sources. The outcome will reflect which player wins the match at Contrexeville. Resolution occurs after the event is finalized and confirmed through reliable reporting, ensuring all traders have access to the same definitive information. Until that point, prices may fluctuate based on pre-match analysis, player form, and betting sentiment. Early resolution is possible if circumstances prevent the match from occurring as scheduled, though standard procedures apply in such cases.
Several factors could shift prices significantly before resolution. Recent tournament performance, head-to-head records, and player rankings influence trader expectations. Injury announcements or fitness updates about either competitor can trigger sharp repricing. Court surface conditions, weather forecasts, and venue specifics matter in tennis and may sway odds closer to match day. Betting patterns from professional syndicates or sharp money can signal conviction and move prices quickly. Media coverage, expert commentary, and public sentiment also play a role. Any unexpected news—such as withdrawal, coaching changes, or personal circumstances—could create volatility. Traders monitor these signals continuously to identify mispricings and adjust positions accordingly.