KalshiClosedCheck availabilityKYC required2% feeVerified resolution dataRoughly calibratedThis market resolved: Marta Kostyuk (98%)
Resolved: Aug 6, 2026, 10:17 PM
Provider-verified resolution
CoinRithm has provider-backed winner and settlement-time evidence for this market.
Data quality warningStale data
Data as of Aug 6, 2026, 9:50 PM UTC · policy pm-quality-3
Current implied probabilityMarta Kostyuk 98%+42.0pt
Market quality
49 / 100
Low quality24h Volume
$2M
Liquidity
$1.2M
High liquidityBid / Ask
1.0% / 2.0%
Spread
1.0 pt
Tight spreadMarket data
Updated 7 hours ago
StaleAug 5, 26, 4:05 PMAug 20, 26, 4:00 PM
Probability Timeline
Madison Keys2%
Marta Kostyuk98%
2%
98%
Rules
If Marta Kostyuk wins the Kostyuk vs Keys professional tennis match in the 2026 WTA Toronto Round Of 32 after a ball has been played, then the market resolves to Yes.
- The following market refers to the Kostyuk vs Keys professional tennis match in the 2026 WTA Toronto Round Of 32 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).
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