About This Market
Arthur Fils vs.
Arthur Fils vs. Stefanos Tsitsipas: ATP Tennis match held on 2026-08-31. Review the historical prediction market odds from Kalshi, Polymarket, and more on Prediction.com.
Arthur Fils vs. Stefanos Tsitsipas
Arthur Fils vs. Stefanos Tsitsipas
Live prediction market odds for Arthur Fils vs. Stefanos Tsitsipas. Compare prices across .
ATP Listed Resolved
This market resolved on Sep 1, 2026. Stefanos Tsitsipas was the officially declared outcome.
Arthur Fils vs.
Arthur Fils vs. Stefanos Tsitsipas: ATP Tennis match held on 2026-08-31. Review the historical prediction market odds from Kalshi, Polymarket, and more on Prediction.com.
| Question | Result |
|---|---|
Stefanos TsitsipasWINNER | Yes |
Arthur Fils | No |
Official settlement criteria, resolution sources, and edge cases across Kalshi and Polymarket and ProphetX.
KalshiIf Arthur Fils wins the Tsitsipas vs Fils professional tennis match in the 2026 US Open Men Singles Round Of 128 after a ball has been played, then the market resolves to Yes.
The following market refers to the Tsitsipas vs Fils professional tennis match in the 2026 US Open Men 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). 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 Stefanos Tsitsipas and Arthur Fils in the US Open ATP, originally scheduled for August 30, 2026 at 11:00AM ET. This market will resolve to 'Stefanos Tsitsipas' if Stefanos Tsitsipas advances against Arthur Fils. This market will resolve to 'Arthur Fils' if Arthur Fils advances against Stefanos Tsitsipas. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 13, 2026, 11:59 PM ET (14 days after the scheduled start), 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.