TOTAL VOLUME:
$134.1b
24H VOL:
$113,466,932
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,423,222,590
402,751
Markets across
30,217
events
MATCHED EVENTS:
2,632
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 19, 9:00 AM EST
Polymarket
This market refers to the tennis match between Mayar Sherif and Jeline Vandromme in the Contrexeville, originally scheduled for July 12, 2026 at 9:00AM ET. This market will resolve to 'Mayar Sherif' if Mayar Sherif advances against Jeline Vandromme. This market will resolve to 'Jeline Vandromme' if Jeline Vandromme advances against Mayar Sherif. 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 Mayar Sherif and Jeline Vandromme in the Contrexeville, originally scheduled for July 12, 2026 at 9:00AM ET. This market will resolve to 'Mayar Sherif' if Mayar Sherif advances against Jeline Vandromme. This market will resolve to 'Jeline Vandromme' if Jeline Vandromme advances against Mayar Sherif. 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 traditional sportsbook odds often diverge because they reflect different participant bases and incentive structures. Sportsbooks set lines to balance action and lock in profit margins, while prediction markets are driven by traders risking real capital on their beliefs. This market aggregates the collective forecast of thousands of independent participants, which can reveal insights that differ from bookmaker pricing. Comparing the two can highlight where consensus disagrees and uncover potential edges in either venue.
On Polymarket, this market is priced through an automated market maker that converts trader buy and sell orders into real-time probability estimates. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The price you see reflects the cumulative bets placed on each outcome, with larger positions moving the odds more dramatically. As traders add capital or exit positions, the price adjusts instantly, ensuring the market stays responsive to new information and sentiment shifts throughout the trading window.
This market resolves around Jul 19, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The winning position will be determined by the official match result, and payouts are distributed to holders of the correct outcome. Until that date, traders can buy, sell, or hold their positions as new information emerges. Resolution typically occurs shortly after the match concludes and the result is publicly available.
Key catalysts include player injury reports, recent form and head-to-head records, court surface conditions, and any weather disruptions at the venue. Betting action from professional syndicates or sharp bettors can also shift prices rapidly as they deploy capital based on proprietary analysis. Media coverage, odds movements at major sportsbooks, and social sentiment may influence retail traders. Any official announcements regarding the match schedule or player status could trigger significant repricing before the final whistle.