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: Jun 20, 6:30 AM EST
Polymarket
This market refers to the tennis match between Mimi Xu and Kimberly Birrell in the Nottingham Open, Qualification, originally scheduled for June 13, 2026 at 6:30AM ET. This market will resolve to 'Mimi Xu' if Mimi Xu advances against Kimberly Birrell. This market will resolve to 'Kimberly Birrell' if Kimberly Birrell advances against Mimi Xu. 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 Mimi Xu and Kimberly Birrell in the Nottingham Open, Qualification, originally scheduled for June 13, 2026 at 6:30AM ET. This market will resolve to 'Mimi Xu' if Mimi Xu advances against Kimberly Birrell. This market will resolve to 'Kimberly Birrell' if Kimberly Birrell advances against Mimi Xu. 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 manage risk, while prediction markets aggregate the beliefs of traders risking real capital. This market may show higher or lower implied probabilities than traditional betting sites, depending on which venue's participants have fresher information or stronger conviction about the match outcome. Comparing the two can reveal where consensus is strongest.
On Polymarket, traders set the odds by buying and selling shares that represent each possible 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 forecast of all active traders at any moment. As new information emerges—such as player form, injury reports, or head-to-head records—traders adjust their positions, moving the market price up or down. This continuous price discovery mechanism ensures the odds stay responsive to real-world developments.
This market resolves around Jun 20, 2026, once the qualification match concludes and the result is verifiable from credible public sources. The outcome will reflect which player advances from the qualification round. Until that point, traders can continue to buy and sell shares as new information and match developments influence their expectations.
Several factors may shift trader sentiment and move this market before resolution. Recent performance and ranking changes for either player, injury announcements, or head-to-head history could trigger significant repricing. Court conditions at the Nottingham Open, draw positioning, and pre-match commentary from analysts may also influence trading activity. Any unexpected news about player form or fitness in the days leading up to the match could cause sharp moves in the odds.