Live prediction market odds for Madison Keys vs. Kayla Day. Compare prices across Kalshi and Polymarket.
Kalshi / Polymarket
2026-06-30
Madison Keys vs. Kayla Day — WTA Tennis match scheduled for 2026-06-30. Compare live prediction market odds from Kalshi, Polymarket, and more on Prediction Hunt.
Madison Keys leads the “Madison Keys vs. Kayla Day” event at 88.5% implied probability, followed by Kayla Day at 11.0%. A 2.0% cross-platform spread signals an active arbitrage window.
Madison Keys vs. Kayla Day is a prediction market event currently tracked across 2 platforms (Kalshi, Polymarket). Madison Keys leads at 89% implied probability, making it the market favorite. Other contenders include Kayla Day at 11%.
Madison Keys currently leads at 89% implied probability. Behind Madison Keys, Kayla Day at 11% are the next closest contenders. A 2.0% spread across platforms indicated moderate disagreement on the latest developments.
Here are the latest odds across Kalshi, Polymarket: Madison Keys: 89¢ on Kalshi, 88¢ on Polymarket. Kayla Day: 10¢ on Kalshi, 12¢ on Polymarket. The 2.0% spread shows moderate platform divergence worth monitoring for potential opportunities.
A price of 89¢ means the market estimates a 89% probability that Madison Keys will be the outcome. Buying one share at 89¢ pays out $1.00 if correct — a 12% return — or $0 if wrong. This is the core mechanic of prediction markets: the price directly reflects the crowd's probability estimate.
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Madison Keys
88.5% avg
Official settlement criteria, resolution sources, and edge cases across Kalshi and Polymarket.
KalshiIf Madison Keys wins the Day vs Keys professional tennis match in the 2026 Wimbledon Women Singles Round Of 128 after a ball has been played, then the market resolves to Yes.
The following market refers to the Day vs Keys professional tennis match in the 2026 Wimbledon Women Singles Round Of 128 after a ball has been played. If the match does not occur (signaled by a ball being played) due to a player injury, walkover, forfeiture, or any other cancellation (all before the match starts), the market will resolve to a fair price in accordance with the rules. If this match is postponed or delayed, the market will remain open and close after the rescheduled match has finished (within two weeks).
PolymarketThis 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.
