Cincinnati Open: Mariano Navone vs Raphael Collignon

Platform comparison

Market context

The Cincinnati Open match between Mariano Navone and Raphael Collignon is scheduled for 13 August 2026 at 10:00 AM ET. Polymarket currently prices this contract at 100% YES, meaning traders are pricing in near-certainty that Navone advances. This extreme confidence reflects either substantial pre-match intelligence about player form or the baseline assumption that both players will show and complete the fixture without incident.

Navone, an Argentine player ranked in the ATP's mid-tier, has competed consistently on the North American hard-court circuit. Collignon, a Belgian journeyman, typically appears in qualifying draws or lower-ranked tournaments. Historical precedent suggests matches between players of this profile differential rarely fail to complete; cancellations at Masters 1000 events are rare absent injury during play or extreme weather. The 100% pricing likely discounts genuine completion risk—weather delays, last-minute withdrawals, or mid-match retirements do occur, albeit infrequently. Traders holding YES positions face tail risk if either player withdraws before the match begins or if play is suspended beyond the seven-day resolution window.

The settlement window closes 20 August 2026 at 14:00 UTC, providing a one-week buffer for rescheduling. Traders should monitor ATP injury reports and Cincinnati weather forecasts in the days preceding the match. The Polymarket contract uses conditional tokens on Polygon (USDC settlement), meaning positions remain locked until the match concludes or the resolution criteria trigger. Any announcement of player withdrawal or tournament schedule changes will likely shift pricing sharply from current extremes.

Methodology

This page reviews Cincinnati Open: Mariano Navone vs Raphael Collignon across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Polymarket Scam?, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

UK Frequently Asked Questions

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Polymarket Scam?. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

Is Polymarket legal in the UK?

Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.

Do I pay tax on prediction market profits in the UK?

UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.

How do I deposit on Polymarket from the UK?

UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.