KalshiClosedCheck availabilityKYC required2% feeVerified resolution dataRoughly calibratedThis market resolved: Niels McDonald (69%)
Resolved: Aug 12, 2026, 1:22 PM
Provider-verified resolution
CoinRithm has provider-backed winner and settlement-time evidence for this market.
Winning Outcome
Niels McDonald
At 7 days out
—
At 24 hours out
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Data quality warningStale data
Data as of Aug 12, 2026, 1:10 PM UTC · policy pm-quality-3
Current implied probabilityNiels McDonald 69.7%
Market quality
49 / 100
Low quality24h Volume
$2.7M
Liquidity
$1.3M
High liquidityBid / Ask
71.0% / 73.0%
Spread
2.0 pt
Moderate spreadMarket data
Updated 4 hours ago
StaleAug 11, 26, 9:50 PMAug 26, 26, 9:40 AM
Probability Timeline
Niels McDonald69%
Eduardo Ribeiro30%
69.7%
30.3%
Rules
If Niels McDonald wins the McDonald vs Ribeiro professional tennis match in the 2026 ATP Challenger Hamburg Round Of 16 after a ball has been played, then the market resolves to Yes.
- The following market refers to the McDonald vs Ribeiro professional tennis match in the 2026 ATP Challenger Hamburg Round Of 16 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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