Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Kalshi UK) Pick polygram.ink (preferred broker) |
57% | 43% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
57% | 43% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 1H O/U 19.5 | 57% |
| O/U 37.5 | 56% |
| Raiders vs. Texans | 55% |
| O/U 38.5 | 55% |
| Texans O/U 18.5 | 52% |
| Texans O/U 17.5 | 50% |
| O/U 39.5 | 50% |
| Raiders O/U 20.5 | 50% |
| Spread -1.5 | 49% |
| Raiders O/U 18.5 | 49% |
| 1H O/U 20.5 | 49% |
| Texans O/U 19.5 | 48% |
| O/U 40.5 | 47% |
| Raiders O/U 19.5 | 47% |
| 1H Moneyline | 46% |
| Texans O/U 20.5 | 44% |
| Spread -1.5 | 43% |
| Spread -2.5 | 40% |
| 1H Spread -0.5 | 29% |
Market context
The Las Vegas Raiders face the Houston Texans in an NFL preseason matchup on 20 August at 8:00 PM ET. Polymarket currently prices Raiders victory at 55%, reflecting modest confidence in the visiting side despite Houston's stronger recent regular-season record. The conditional token structure on Polygon means traders holding YES (Raiders) or NO (Texans) positions settle in USDC against the game's actual outcome, with the settlement window closing at midnight UTC on 21 August—allowing roughly 16 hours post-kickoff for result confirmation before market closure.
Preseason games carry inherent volatility in prediction markets because roster composition, injury management, and coaching priorities diverge sharply from regular-season incentives. Historical data shows that teams with stronger playoff credentials often rest starters or rotate lineups heavily in August, flattening expected performance differentials. Houston's 2024 regular season saw them finish 10–7 and reach the AFC South title, whilst Las Vegas went 4–13, yet preseason outcomes correlate weakly with those standings. Markets pricing preseason contests typically widen probability bands around 50–50 more readily than regular-season games, reflecting genuine uncertainty about which squad fields its competitive roster.
Traders should monitor official injury reports released 24 hours before kickoff, as the absence of key offensive or defensive contributors can shift line value meaningfully. Weather conditions at the venue and any last-minute coaching announcements regarding starter participation will move the market in final hours. The tie resolution clause (50–50 split) remains unlikely but possible; no recent preseason tie has occurred in the NFL since 2018, though the mechanism exists in the contract terms.
Live Data & Statistics
Live stats load when the match begins. Current market odds are shown above. Trading volume: $158K.
Methodology
This page reviews Raiders vs. Texans 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 Kalshi UK, 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 Kalshi UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- 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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