Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
57% | 43% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
57% | 43% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open live market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open live market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open live market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open live market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Chargers O/U 18.5 | 57% |
| O/U 36.5 | 54% |
| 1H Moneyline | 54% |
| Chargers vs. Texans | 51% |
| Texans O/U 18.5 | 50% |
| Chargers O/U 17.5 | 50% |
| Texans O/U 17.5 | 50% |
| Chargers O/U 19.5 | 50% |
| 1H O/U 19.5 | 48% |
| Spread -1.5 | 47% |
| O/U 37.5 | 46% |
| Spread -2.5 | 45% |
| 1H Spread -0.5 | 45% |
| Spread -1.5 | 44% |
| O/U 38.5 | 43% |
| Texans O/U 19.5 | 43% |
Market context
The Los Angeles Chargers face the Houston Texans on 13 August at 8:00 PM ET in an NFL preseason contest. Settlement occurs via USDC at 00:00 UTC on 14 August, with the market currently pricing the Chargers at 51% implied probability. Preseason games carry lower predictive weight than regular-season fixtures, yet the 51–49 split suggests traders view this matchup as genuinely competitive rather than heavily favoured to either side.
Historical preseason markets on crypto platforms show that crowd probabilities tend to compress toward 50–50 when underlying teams lack clear talent or injury advantages. The Chargers and Texans are both AFC South/West contenders with established quarterback situations—Justin Herbert and C.J. Stroud respectively—making this a relatively balanced fixture. Comparable August matchups between evenly-matched rosters have settled within 3–5 percentage points of opening odds, indicating that the current 51% lean reflects genuine uncertainty rather than sharp consensus.
Traders should monitor injury reports through 12 August, particularly any late-week absences among key defensive starters or offensive linemen. Preseason depth-chart decisions often drive unexpected outcomes, and coaching staff rotation patterns can shift win probability materially. Recent NFL news outlets including ESPN and The Athletic typically publish final roster confirmations 48 hours before kickoff. Funding rates on major crypto exchanges remain stable, suggesting no material macro volatility is expected to influence settlement mechanics or USDC liquidity on the resolution date.
Live Data & Statistics
Live stats load when the match begins. Current market odds are shown above. Trading volume: $192K.
Methodology
Methodologically this overview focuses on on-chain pricing: Polymarket's live mid comes from the Polygon conditional-token order book and settles automatically in USDC. The other three venues — Kalshi, Betfair, Manifold — sit alongside as off-chain reference points so you can see how the contract translates across regulatory and settlement regimes.
Resolution & payout
Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.
Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.
UK Frequently Asked Questions
- What are crypto prediction markets?
- Crypto prediction markets are on-chain smart contracts where you buy YES or NO shares on a future crypto event (e.g. "BTC above $100k by year-end"). The market price between 0¢ and 100¢ is the implied probability.
- Why USDC and not ETH or USDT?
- USDC is the Polygon standard — audited reserves (Circle, monthly attestation), deepest order book, low gas costs. ETH volatility would distort probability quotes; USDT has thinner Polygon liquidity than USDC.
- 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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