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 6, 6:00 AM EST
Polymarket
This market refers to the tennis match between Kayla Day and Madison Keys in the Wimbledon WTA, originally scheduled for June 29, 2026 at 6:00AM ET. This market will resolve to 'Kayla Day' if Kayla Day advances against Madison Keys. This market will resolve to 'Madison Keys' if Madison Keys advances against Kayla Day. 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 Kayla Day and Madison Keys in the Wimbledon WTA, originally scheduled for June 29, 2026 at 6:00AM ET. This market will resolve to 'Kayla Day' if Kayla Day advances against Madison Keys. This market will resolve to 'Madison Keys' if Madison Keys advances against Kayla Day. 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. This market may show different probabilities than traditional sports betting sites, especially as new information emerges or as the event date approaches. Comparing the two can reveal where consensus is strongest and where disagreement exists among different groups of forecasters.
On Polymarket, traders set prices by buying and selling outcome shares in an automated market maker system. 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 probability estimate—higher prices mean the market views that outcome as more likely. As new information surfaces or trading patterns shift, prices adjust continuously. This mechanism ensures that the odds you see represent real money at stake, making them a genuine reflection of trader conviction about the match result.
This market resolves around Jul 6, 2026, with the outcome confirmed once the match result is verifiable from credible public reporting. The resolution will reflect the official result of the Wimbledon WTA match between Day and Keys. Once the event concludes and the winner is established through standard tournament records, the market will settle accordingly. Traders holding shares in the winning outcome will receive their payout based on the final odds at resolution.
Several factors could shift odds before the match takes place. Player injuries, recent tournament performance, head-to-head records, and court conditions at Wimbledon all influence trader expectations. News about either player's form, fitness, or mental readiness can trigger rapid repricing. Additionally, betting patterns and large trades by sophisticated forecasters often signal new information to the broader market. Weather forecasts and draw positioning within the tournament bracket may also prompt traders to adjust their positions as the event date draws closer.