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Live prediction market odds for James Duckworth vs. Fabian Marozsan. Compare prices across Kalshi and Polymarket US and Polymarket.

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Claim offerLegal in USAVerified Sep 14, 2026

MARKET RESOLVEDKalshi / Polymarket US / Polymarket

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James Duckworth Wins: James Duckworth vs. Fabian Marozsan

ATP·Resolved 2026-08-28

This market resolved on 2026-08-28. James Duckworth was the officially declared outcome. Prior to resolution, the market peaked at 86%.

About This Market

James Duckworth vs.

James Duckworth vs. Fabian Marozsan — ATP Tennis match held on 2026-08-28. Review the historical prediction market odds from Kalshi, Polymarket, and more on Prediction Hunt.

Price History

Multi-Platform Probabilities
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Final odds
Loading 30D data…

Final Closing Odds

3 platforms
Candidate
Kalshi
Polymarket US
Polymarket
James DuckworthWINNER
99%74%86%
Fabian Marozsan
1%11%14%

Resolution Oracles

KalshiKalshi
Kalshi Rules
PolymarketPolymarket
UMA Optimistic OracleConsensus of Sources
Read Full Market Rulebooks
Stats
Spread25.0%
Platforms3
Candidates2
Winner

James Duckworth

86.2% avg

Market RulebooksOfficial settlement criteria and edge cases

Market Rulebook: James Duckworth vs. Fabian Marozsan

Official settlement criteria, resolution sources, and edge cases across Kalshi and Polymarket and Polymarket US.

KalshiKalshi
Primary Rule

If Fabian Marozsan wins the Marozsan vs Duckworth professional tennis match in the 2026 ATP Winston Salem Quarterfinal after a ball has been played, then the market resolves to Yes.

Edge Cases

The following market refers to the Marozsan vs Duckworth professional tennis match in the 2026 ATP Winston Salem Quarterfinal 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.

Resolution Oracles
Kalshi Rules
PolymarketPolymarket
Primary Rule

This market refers to the tennis match between Fabian Marozsan and James Duckworth in the Winston-Salem Open, originally scheduled for August 27, 2026 at 8:00PM ET. This market will resolve to 'Fabian Marozsan' if Fabian Marozsan advances against James Duckworth. This market will resolve to 'James Duckworth' if James Duckworth advances against Fabian Marozsan. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 10, 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.

Resolution Oracles
UMA Optimistic OracleConsensus of Sources
Polymarket USPolymarket US
Primary Rule

This market will settle to the winner of the Fabian Marozsan vs James Duckworth ATP match scheduled for August 28 at 2:00PM. If the match does not begin due to a walkover, forfeit, injury, or any other cancellation prior to the first point being played, the market will settle to fair market price. If a player retires during the match, the opponent will be recorded as the winner. Outcome sourced from ATP.

Frequently Asked Questions

What does the James Duckworth vs. Fabian Marozsan prediction market track?

The outcomes listed above show how traders are pricing this question. Compare outcome prices from Kalshi, Polymarket US, Polymarket in one place. Each price reflects the market’s implied probability, not a guaranteed result. This event is archived; prices shown are historical.

What were the last available James Duckworth vs. Fabian Marozsan odds?

The last available prices are James Duckworth: 99.0¢ on Kalshi, 85.6¢ on Polymarket, 74.0¢ on Polymarket US; Fabian Marozsan: 1.0¢ on Kalshi, 14.4¢ on Polymarket, 10.5¢ on Polymarket US. Prices are quoted in cents per $1 share. Check the venue for executable prices and available liquidity. The last available price is not necessarily the final settlement price.

Why do James Duckworth vs. Fabian Marozsan odds vary across prediction markets?

The largest price difference shown across venues is 25.0 percentage points. Venues have different traders, liquidity and fees, so their prices can differ. A price gap alone does not establish an executable arbitrage opportunity; compare settlement rules and the actual buy and sell prices.

How do James Duckworth vs. Fabian Marozsan prediction market payouts work?

For example, James Duckworth at 86.2¢ implies about a 86.2% 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.

No price history available