About This Market
Matteo Arnaldi vs.
Matteo Arnaldi vs. Tallon Griekspoor: ATP Tennis match held on 2026-08-07. Review the historical prediction market odds from Kalshi, Polymarket, and more on Prediction.com.
Matteo Arnaldi vs. Tallon Griekspoor
Matteo Arnaldi vs. Tallon Griekspoor
Live prediction market odds for Matteo Arnaldi vs. Tallon Griekspoor. Compare prices across .
ATP Listed Resolved
This market resolved on Aug 8, 2026. Tallon Griekspoor was the officially declared outcome.
Matteo Arnaldi vs.
Matteo Arnaldi vs. Tallon Griekspoor: ATP Tennis match held on 2026-08-07. Review the historical prediction market odds from Kalshi, Polymarket, and more on Prediction.com.
| Question | Result |
|---|---|
Tallon GriekspoorWINNER | Yes |
Matteo Arnaldi | No |
Official settlement criteria, resolution sources, and edge cases across Kalshi and Polymarket and ProphetX.
KalshiIf Tallon Griekspoor wins the Griekspoor vs Arnaldi professional tennis match in the 2026 ATP Montreal Round Of 32 after a ball has been played, then the market resolves to Yes.
The following market refers to the Griekspoor vs Arnaldi professional tennis match in the 2026 ATP Montreal 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). Kalshi is not affiliated, associated, authorized, endorsed by, or in any way officially connected with the Governing League. All trademarks, logos, and brand names are the property of their respective owners.
PolymarketThis market refers to the tennis match between Tallon Griekspoor and Matteo Arnaldi in the National Bank Open, originally scheduled for August 7, 2026 at 10:00AM ET. This market will resolve to 'Tallon Griekspoor' if Tallon Griekspoor advances against Matteo Arnaldi. This market will resolve to 'Matteo Arnaldi' if Matteo Arnaldi advances against Tallon Griekspoor. 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 ATP Tour. A consensus of credible reporting may also be used.
ProphetXSports moneyline - resolves based on official game outcome per ProphetX Prediction Rules
The outcomes listed above show how traders are pricing this question. Venue prices are not currently available on this page. Each price reflects the market’s implied probability, not a guaranteed result. This event is archived; prices shown are historical.
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For example, a 40¢ price implies about a 40% chance. For a standard $1 contract, a share pays $1 if its outcome settles as correct and $0 if it settles as incorrect. A winning share bought at 40¢ earns 60¢ before fees. Check each venue’s settlement rules, fees and eligibility before trading. Historical prices alone do not identify the winning outcome.