Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Legal UK) Pick polygram.ink (preferred broker) |
77% | 23% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
77% | 23% | 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 |
|---|---|
| 1st 5 Innings O/U 2.5 | 77% |
| 1st 5 Innings O/U 3.5 | 64% |
| Houston Astros vs. San Francisco Giants | 59% |
| O/U 7.5 | 57% |
| 1st 5 Innings O/U 4.5 | 52% |
| NRFI | 50% |
| O/U 8.5 | 50% |
| Spread -1.5 | 46% |
| 1st 5 Innings O/U 5.5 | 40% |
| O/U 9.5 | 38% |
| 1st 5 Innings Spread -1.5 | 35% |
| Spread -2.5 | 35% |
| 1st 5 Innings O/U 6.5 | 29% |
| Spread -1.5 | 26% |
| 1st 5 Innings Spread -1.5 | 25% |
| Spread -2.5 | 18% |
| Extra Innings | 8% |
Market context
The Houston Astros face the San Francisco Giants on 10 August at 21:45 ET in a regular-season MLB fixture. The market resolves to the Astros if they win; to the Giants if they win. Postponement extends the settlement window until completion; cancellation or a tie triggers a 50-50 split. The current crowd-implied probability of 59% for an Astros victory reflects their stronger 2026 regular-season record and home-field advantage in this matchup.
Historical matchup data and recent form provide context for interpreting the 59% probability. The Astros have maintained a winning record against the Giants in their last ten meetings, with Houston's pitching depth and offensive consistency typically outperforming San Francisco's variable lineup performance. The Giants' bullpen has shown volatility this season, whilst the Astros' closer rotation remains among the AL's most reliable. These structural advantages explain why the market has settled above the 50% midpoint, though the Giants remain competitive in any single-game scenario.
From a regulatory standpoint, this market's accessibility varies by jurisdiction. Under German GlüStV provisions, sports prediction markets require specific licensing; traders in Germany should verify their platform's compliance status. US CFTC oversight applies to binary sports contracts, though prediction markets operating under certain exemptions may fall outside direct CFTC reach. Many platforms offer no-KYC trading up to $1,500 per transaction, meaning traders can participate without identity verification below that threshold—a feature that increases accessibility but does not alter underlying settlement mechanics or dispute resolution procedures. Traders should confirm their platform's specific regulatory framework before committing capital.
Live Data & Statistics
Live stats load when the match begins. Current market odds are shown above. Trading volume: $132K.
Methodology
This overview of Houston Astros vs. San Francisco Giants reviews the four comparable platforms from a regulatory perspective: which is accessible in your jurisdiction, where KYC kicks in, how the platform is classified by your country of residence. Live probability is the Polymarket mid; comparison columns show regulatory status, KYC thresholds and settlement options for each platform.
Resolution & payout
On Polymarket, resolution runs on-chain via UMA Optimistic Oracle. USDC payout is instant and automatic, with no KYC. Tax treatment depends on your jurisdiction — in the US, gains are usually ordinary income; in the UK, often capital gains. Consult a tax professional for your situation.
UK Frequently Asked Questions
- Is Polymarket legal in my country?
- Polymarket is geo-blocked in the US/UK/EU. Actual usage via the Polymarket interface is not possible there. The legal status itself varies — many countries treat prediction markets as a gray area. Polymarket Legal UK has a different geo footprint.
- Is Polymarket regulated by the UKGC?
- No. Polymarket is not licensed by the UK Gambling Commission (UKGC). It is a decentralised prediction market operated under US regulation. UK traders can use it but do not benefit from UKGC dispute resolution or player protection requirements.
- What are the HMRC tax rules on Polymarket profits for UK traders?
- Polymarket profits are treated as cryptocurrency disposal events by HMRC. Each USDC settlement is a taxable event subject to Capital Gains Tax (CGT). For 2026/27, the CGT rate is 18% (basic rate) or 24% (higher rate). The annual CGT exemption is £3,000. Report via HMRC Self Assessment if your total crypto gains exceed £3,000 or proceeds exceed £50,000.
- Does Polymarket KYC apply to UK users?
- Yes. Polymarket requires KYC (Know Your Customer) verification for all users, including UK residents. You must provide a government-issued photo ID and a selfie. The process typically takes 5–10 minutes via their ID verification provider.
- What is the legal difference between Polymarket and Betfair Exchange for UK traders?
- Betfair Exchange is UKGC-licensed, meaning UK consumer protections apply and winnings are typically tax-free. Polymarket is not UKGC-licensed — it operates under decentralised blockchain rules. Profits from Polymarket are subject to HMRC CGT as crypto disposals. Choose based on your regulatory preference and tax situation.
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