Kalshi

4.9

Sign-up bonus

Get a $35 trading bonus

Sign-up bonus on Kalshi.

Claim offerLegal in USAVerified Sep 14, 2026

MARKET RESOLVEDKalshi / Polymarket / ProphetX

Arthur Fery Wins: Arthur Fery vs. James Duckworth

ATP·Resolved 2026-08-28

This market resolved on 2026-08-28. Arthur Fery was the officially declared outcome. Prior to resolution, the market peaked at 87%.

About This Market

Arthur Fery vs.

Arthur Fery vs. James Duckworth: 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

Learn more:How to Read Prediction Market Prices Compare Fees Before You Trade New to Polymarket?

Market RulebooksOfficial settlement criteria and edge cases

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

Rules for Candidate:

Kalshi

Primary Rule

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

Edge Cases

The following market refers to the Duckworth vs Fery professional tennis match in the 2026 ATP Winston Salem Semifinal 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

Polymarket

Primary Rule

This market refers to the tennis match between James Duckworth and Arthur Fery in the Winston-Salem Open, originally scheduled for August 28, 2026 at 6:30PM ET. This market will resolve to 'James Duckworth' if James Duckworth advances against Arthur Fery. This market will resolve to 'Arthur Fery' if Arthur Fery advances against James Duckworth. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 11, 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

ProphetX

Primary Rule

Sports moneyline - resolves based on official game outcome per ProphetX Prediction Rules

Resolution Oracles

ProphetX Rules

Frequently Asked Questions

What does the Arthur Fery vs. James Duckworth prediction market track?

The outcomes listed above show how traders are pricing this question. Compare outcome prices from Kalshi, Polymarket, ProphetX 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 Arthur Fery vs. James Duckworth odds?

The last available prices are Arthur Fery: 83.0¢ on Kalshi, 99.9¢ on Polymarket, 87.4¢ on ProphetX; James Duckworth: 18.0¢ on Kalshi, 99.9¢ on Polymarket, 16.9¢ on ProphetX. 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 Arthur Fery vs. James Duckworth odds vary across prediction markets?

The largest price difference shown across venues is 83.0 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 Arthur Fery vs. James Duckworth prediction market payouts work?

For example, Arthur Fery at 90.1¢ implies about a 90.1% 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.

Candidate
Arthur FeryWINNER	83%	100%	87%
James Duckworth	18%	100%	17%

Arthur Fery Wins: Arthur Fery vs. James Duckworth

About This Market

Price History

Arthur Fery Wins: Arthur Fery vs. James Duckworth

About This Market

Price History

Related Markets

Syracuse Orange vs. UConn Huskies

Calgary Flames vs. Vancouver Canucks

Tennessee Tech Golden Eagles vs. Western Carolina Catamounts

Gardner-Webb Runnin' Bulldogs vs. Charleston Southern Buccaneers

Esport Academy Copenhagen vs. BASEMENT BOYS

Related Markets

Syracuse Orange vs. UConn Huskies

Calgary Flames vs. Vancouver Canucks

Tennessee Tech Golden Eagles vs. Western Carolina Catamounts

Gardner-Webb Runnin' Bulldogs vs. Charleston Southern Buccaneers

Esport Academy Copenhagen vs. BASEMENT BOYS

Final Closing Odds

Resolution Oracles

Frequently Asked Questions

Arthur Fery Wins: Arthur Fery vs. James Duckworth

About This Market

Price History

Arthur Fery Wins: Arthur Fery vs. James Duckworth

About This Market

Price History

Related Markets

Syracuse Orange vs. UConn Huskies

Calgary Flames vs. Vancouver Canucks

Tennessee Tech Golden Eagles vs. Western Carolina Catamounts

Gardner-Webb Runnin' Bulldogs vs. Charleston Southern Buccaneers

Esport Academy Copenhagen vs. BASEMENT BOYS

Related Markets

Syracuse Orange vs. UConn Huskies

Calgary Flames vs. Vancouver Canucks

Tennessee Tech Golden Eagles vs. Western Carolina Catamounts

Gardner-Webb Runnin' Bulldogs vs. Charleston Southern Buccaneers

Esport Academy Copenhagen vs. BASEMENT BOYS

Final Closing Odds

Resolution Oracles

Market Rulebook: Arthur Fery vs. James Duckworth

Frequently Asked Questions