Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via PolyGram) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Trade this market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Trade this market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Trade this market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Trade this market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Cincinnati Open: Jaime Faria vs Jenson Brooksby Set 1 Winner | 100% |
| Cincinnati Open: Jaime Faria vs Jenson Brooksby Set 1 O/U 8.5 | 100% |
| Cincinnati Open: Jaime Faria vs Jenson Brooksby Set 2 Winner | 88% |
| Cincinnati Open: Jaime Faria vs Jenson Brooksby | 86% |
| Completed Match | 50% |
| Cincinnati Open: Jaime Faria vs Jenson Brooksby Total Sets: O/U 2.5 | 50% |
| Cincinnati Open: Jaime Faria vs Jenson Brooksby Set 2 O/U 8.5 | 50% |
| Cincinnati Open: Jaime Faria vs Jenson Brooksby Match O/U 21.5 | 50% |
| Cincinnati Open: Jaime Faria vs Jenson Brooksby Set 2 O/U 9.5 | 50% |
| Cincinnati Open: Jaime Faria vs Jenson Brooksby Set Handicap +/-1.5 | 50% |
| Cincinnati Open: Jaime Faria vs Jenson Brooksby Match O/U 23.5 | 50% |
| Cincinnati Open: Jaime Faria vs Jenson Brooksby Set Handicap +/-1.5 | 50% |
| Cincinnati Open: Jaime Faria vs Jenson Brooksby Set 2 O/U 10.5 | 25% |
| Cincinnati Open: Jaime Faria vs Jenson Brooksby Match O/U 22.5 | 20% |
| Cincinnati Open: Jaime Faria vs Jenson Brooksby Set 1 O/U 9.5 | 0% |
| Cincinnati Open: Jaime Faria vs Jenson Brooksby Set 1 O/U 10.5 | 0% |
Market context
Polymarket currently prices Faria's advancement at 42 cents on the dollar, implying Brooksby holds a 58% edge in the conditional token market. The match is scheduled for 14 August 2026 at the Cincinnati Open, with settlement contingent on a completed match by 21 August. On-chain liquidity sits at modest levels typical for lower-seeded ATP matchups; USDC positions reflect uncertainty about both players' form heading into the hard-court swing.
Faria, a Brazilian qualifier or lower-ranked entrant, faces Brooksby, an American with established ATP credentials and prior Cincinnati experience. Historical precedent suggests American players at home events carry a modest home-court premium in prediction markets, though this effect weakens when facing unfamiliar opponents. Brooksby's ranking and seeding status relative to Faria will determine whether the 58% probability reflects genuine skill differential or market overweighting of name recognition. Recent ATP rankings and draw positioning released in late July will sharpen this assessment considerably.
Traders should monitor official Cincinnati Open draw announcements and any late withdrawals through early August. Injury reports matter substantially—Brooksby's recent match history and any fitness concerns would shift conditional token pricing. Weather forecasts for Cincinnati during the tournament window may affect surface conditions and playing style matchups. The seven-day resolution window creates tail risk; if the match is delayed beyond 21 August without completion, the contract settles 50-50, effectively voiding positions and creating arbitrage opportunities for those tracking tournament scheduling updates.
Methodology
This page reviews Cincinnati Open: Jaime Faria vs Jenson Brooksby 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 PolyGram, 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
- 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.
- How does resolution work?
- Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.
- 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%.
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