Winston-Salem Open: James Duckworth vs Mariano Navone

Platform comparison

Market context

James Duckworth and Mariano Navone were scheduled to meet at the Winston-Salem Open on 25 August, with the official tournament schedule listing their singles match on Court 3 and third-party scoreboards showing the pairing in the round of 32/second round frame. The market’s 100% crowd-implied probability points to a contract that is already priced as a done deal, but the settlement still depends on the ATP event actually recording a winner rather than the match being abandoned, delayed past the window, or otherwise left without a completed result.

Historically, these tennis resolution markets can look certain right up until weather, retirements, or order-of-play changes intervene, especially in the final week before a hard-court event finishes. That matters here because the Winston-Salem schedule is explicitly tentative and subject to change, and the settlement rules move to 50-50 if no winner is determined by 8 September. In comparable cases, traders typically treat the listing of both players on the order of play as stronger evidence than crowd odds alone.

The main catalyst to watch is whether the tournament confirms the match is played and completed before the settlement deadline. Any late shuffle in the night session, withdrawal, walkover, or suspension would matter more than broader BTC or ETH moves, although crypto market stress can still influence the USDC-denominated market through risk appetite and on-chain liquidity. With the contract already fully one-sided, the only meaningful price risk is operational: match status, official result publication, and whether the event proceeds through the stated schedule without disruption.

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Methodology

This page reads Winston-Salem Open: James Duckworth vs Mariano Navone on-chain. Polymarket's quote comes directly from the Polygon order book — the only comparable venue with on-chain settlement. Kalshi (USD, off-chain), Betfair (GBP/EUR, off-chain) and Manifold (play-money) are listed alongside for venue context. Every CTA routes to BTC Prediction, which mirrors the Polymarket order book directly.

Resolution & payout

Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.

Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.

UK Frequently Asked Questions

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USDC is the Polygon standard — audited reserves (Circle, monthly attestation), deepest order book, low gas costs. ETH volatility would distort probability quotes; USDT has thinner Polygon liquidity than USDC.

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