Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Review UK) 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 |
|---|---|
| Quebec City: Andrea Pellegrino vs Nishesh Basavareddy | 100% |
| Completed Match | 100% |
| Quebec City: Andrea Pellegrino vs Nishesh Basavareddy Set 1 O/U 8.5 | 100% |
| Quebec City: Andrea Pellegrino vs Nishesh Basavareddy Total Sets: O/U 2.5 | 100% |
| Quebec City: Andrea Pellegrino vs Nishesh Basavareddy Set 2 Winner | 100% |
| Quebec City: Andrea Pellegrino vs Nishesh Basavareddy Match O/U 21.5 | 100% |
| Quebec City: Andrea Pellegrino vs Nishesh Basavareddy Set 2 O/U 8.5 | 100% |
| Quebec City: Andrea Pellegrino vs Nishesh Basavareddy Match O/U 22.5 | 100% |
| Quebec City: Andrea Pellegrino vs Nishesh Basavareddy Match O/U 23.5 | 100% |
| Quebec City: Andrea Pellegrino vs Nishesh Basavareddy Set 1 Winner | 0% |
| Quebec City: Andrea Pellegrino vs Nishesh Basavareddy Set Handicap +/-1.5 | 0% |
| Quebec City: Andrea Pellegrino vs Nishesh Basavareddy Set 1 O/U 9.5 | 0% |
| Quebec City: Andrea Pellegrino vs Nishesh Basavareddy Set 2 O/U 9.5 | 0% |
| Quebec City: Andrea Pellegrino vs Nishesh Basavareddy Set Handicap +/-1.5 | 0% |
| Quebec City: Andrea Pellegrino vs Nishesh Basavareddy Set 1 O/U 10.5 | 0% |
| Quebec City: Andrea Pellegrino vs Nishesh Basavareddy Set 2 O/U 10.5 | 0% |
Market context
The ATP 250 event in Quebec City on 18 August 2026 will feature a first-round match between Italian qualifier Andrea Pellegrino and American Nishesh Basavareddy. Pellegrino, ranked outside the top 200, competes primarily on the Challenger circuit; Basavareddy, a former junior prospect, has oscillated between ATP and Challenger-level play. The current 100% implied probability for Pellegrino's advancement reflects either incomplete market depth or a significant information asymmetry—such extremes typically indicate thin liquidity rather than certainty. For programmatic traders, this presents a calibration problem: markets at ceiling odds often exhibit poor settlement mechanics when the underlying event carries genuine uncertainty.
Historical precedent from lower-ranked ATP matchups shows that qualifier-versus-fringe-ATP contests rarely resolve with such confidence. Pellegrino's recent form and head-to-head record against Basavareddy (if any exists) would normally anchor probability estimates between 45–65%, depending on surface preference and recent tournament results. The hard court surface at Quebec City favours players with consistent serve-and-volley patterns; neither player's public ranking history suggests dominance in this specific condition.
Traders monitoring this market should flag any late withdrawals or injury announcements in the 72 hours before 18 August. The settlement window extends to 25 August, providing a seven-day buffer for delays. Automated conditional orders should account for the 50-50 tie-resolution clause, which activates if the match is postponed beyond that threshold. ATP official draws and injury reports, typically released five days before tournament start, will be the primary catalyst for probability recalibration.
Methodology
We track Quebec City: Andrea Pellegrino vs Nishesh Basavareddy across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.
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.
- What's the difference between YES and NO shares?
- A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.
- 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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