Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Alternative UK) Pick polygram.ink (preferred broker) |
58% | 42% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | View on Polymarket → |
Polymarket (direct) polymarket.com |
58% | 42% | 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 |
|---|---|
| 1H O/U 19.5 | 58% |
| O/U 37.5 | 57% |
| Raiders vs. Texans | 55% |
| O/U 38.5 | 55% |
| Texans O/U 18.5 | 52% |
| 1H O/U 20.5 | 52% |
| O/U 39.5 | 51% |
| Raiders O/U 20.5 | 51% |
| Spread -1.5 | 50% |
| Texans O/U 17.5 | 50% |
| Raiders O/U 18.5 | 49% |
| Texans O/U 19.5 | 48% |
| O/U 40.5 | 47% |
| Raiders O/U 19.5 | 47% |
| 1H Moneyline | 47% |
| Texans O/U 20.5 | 44% |
| Spread -1.5 | 42% |
| Spread -2.5 | 41% |
| 1H Spread -0.5 | 28% |
Market context
The Las Vegas Raiders face the Houston Texans on 20 August at 8:00 PM ET in an NFL preseason matchup. Polymarket currently prices Raiders victory at 55%, reflecting modest confidence in the home team despite Houston's recent competitive trajectory. The settlement window closes at midnight UTC on 21 August, allowing roughly 16 hours post-kickoff for resolution on the conditional token pair denominated in USDC on Polygon.
Preseason games historically carry wider variance than regular-season contests, partly because roster decisions and injury management shape team strategy in ways that obscure underlying talent. The Raiders won their last preseason encounter against Jacksonville in 2023, whilst Houston's preseason record has improved markedly since acquiring quarterback C.J. Stroud last year. Neither team typically deploys starting lineups extensively in August, making historical win-loss records a blunt instrument for calibrating probabilities. Comparable preseason matchups between AFC South and AFC West clubs show roughly even splits when accounting for home-field advantage, suggesting the current 55–45 split reflects modest Raiders edge rather than dominant positioning.
Traders should monitor injury reports released in the 48 hours before kickoff, particularly regarding defensive starters who might see extended minutes. Recent NFL preseason scheduling has occasionally shifted games due to weather or facility issues, though no postponement signals have emerged for this fixture. Confirmation of starting lineups typically arrives Friday morning, which could shift market sentiment if either team signals reduced participation from key players. The tie-resolution mechanism (50–50 split) remains unlikely but technically possible under NFL rules, a tail risk that occasionally influences conditional token pricing in preseason markets.
Live Data & Statistics
Live stats load when the match begins. Current market odds are shown above. Trading volume: $198K.
Methodology
Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.
Resolution & payout
At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.
On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.
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.
- 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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