Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Alternative UK) Pick polygram.ink (preferred broker) |
50% | 50% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | View on Polymarket → |
Polymarket (direct) polymarket.com |
50% | 50% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | View on Polymarket → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | View on Polymarket → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | View on Polymarket → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | View on Polymarket → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Quebec City: Alexei Popyrin vs Hugo Gaston Set 2 Winner | 50% |
| Quebec City: Alexei Popyrin vs Hugo Gaston Set 2 O/U 8.5 | 50% |
| Quebec City: Alexei Popyrin vs Hugo Gaston Set 1 O/U 8.5 | 50% |
| Quebec City: Alexei Popyrin vs Hugo Gaston Set 1 Winner | 50% |
| Quebec City: Alexei Popyrin vs Hugo Gaston Total Sets: O/U 2.5 | 50% |
| Quebec City: Alexei Popyrin vs Hugo Gaston Match O/U 21.5 | 50% |
| Quebec City: Alexei Popyrin vs Hugo Gaston Set Handicap +/-1.5 | 50% |
| Quebec City: Alexei Popyrin vs Hugo Gaston Set 1 O/U 9.5 | 50% |
| Quebec City: Alexei Popyrin vs Hugo Gaston Match O/U 22.5 | 50% |
| Quebec City: Alexei Popyrin vs Hugo Gaston Set 2 O/U 9.5 | 50% |
| Quebec City: Alexei Popyrin vs Hugo Gaston Set Handicap +/-1.5 | 50% |
| Quebec City: Alexei Popyrin vs Hugo Gaston Set 1 O/U 10.5 | 50% |
| Quebec City: Alexei Popyrin vs Hugo Gaston Match O/U 23.5 | 50% |
| Quebec City: Alexei Popyrin vs Hugo Gaston Set 2 O/U 10.5 | 50% |
| Quebec City: Alexei Popyrin vs Hugo Gaston | 0% |
| Completed Match | 0% |
Market context
Alexei Popyrin, the Australian hard-court specialist ranked in the ATP top 30, faces Hugo Gaston, the French qualifier who has competed sporadically on the professional circuit, in a first-round match at the ATP 250 event in Quebec City scheduled for 20 August 2026. The 0% YES probability on Polymarket reflects near-total confidence in a Popyrin victory, with conditional tokens on Polygon pricing the Australian's advancement at near-certainty. This extreme skew suggests the market has absorbed Popyrin's ranking advantage and recent form as decisive factors, leaving minimal value for contrarian positions on Gaston.
Historical ATP 250 matchups between top-30 players and lower-ranked qualifiers show consistent patterns: seeded players advance in roughly 85–90% of cases, though upsets cluster around specific conditions—fatigue from preceding tournaments, surface unfamiliarity, or injury concerns. Gaston's previous appearances on hard courts outside clay have yielded mixed results, and his qualifying run would demand consecutive victories before facing Popyrin. The settlement window extends to 27 August, allowing seven days beyond the scheduled date for completion, which accommodates typical tournament delays but not extended withdrawals.
Traders should monitor ATP injury bulletins and Popyrin's performance in warm-up matches leading into Quebec City, as any indication of physical strain could shift the probability meaningfully. Gaston's qualifying bracket composition and draw positioning will become clear closer to the tournament; a favourable path through qualifying could marginally improve his odds, though the market's current pricing suggests such developments are already discounted. Weather delays or scheduling changes affecting either player's preparation warrant tracking through official ATP communications.
Methodology
This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Polymarket Alternative UK, which mirrors the Polymarket order book directly.
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 Alternative UK. 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%.
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