Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Prediction Today) Pick polygram.ink (preferred broker) |
71% | 29% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
71% | 29% | 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 |
|---|---|
| 1st 5 Innings O/U 2.5 | 71% |
| O/U 6.5 | 63% |
| 1st 5 Innings O/U 3.5 | 56% |
| O/U 7.5 | 50% |
| NRFI | 46% |
| Colorado Rockies vs. San Francisco Giants | 45% |
| 1st 5 Innings O/U 4.5 | 45% |
| O/U 8.5 | 42% |
| Spread -1.5 | 37% |
| Spread -1.5 | 34% |
| 1st 5 Innings O/U 5.5 | 34% |
| 1st 5 Innings Spread -1.5 | 33% |
| Spread -2.5 | 27% |
| 1st 5 Innings Spread -1.5 | 26% |
| 1st 5 Innings O/U 6.5 | 25% |
| Spread -2.5 | 24% |
| Extra Innings | 10% |
Market context
The Colorado Rockies face the San Francisco Giants on 14 August at 10:15PM ET in a mid-August matchup with the settlement window extending to 22 August. The 45% implied probability for a Rockies victory reflects modest underdog positioning, though recent form and roster availability remain fluid variables through game day.
Historically, the Rockies' home-field advantage at Coors Field has been material in head-to-head matchups, though this particular fixture occurs in San Francisco. The Giants have shown inconsistent performance throughout 2026, whilst Colorado's record against NL West opponents provides context for evaluating the current odds. Previous Rockies–Giants contests this season have split relatively evenly, suggesting neither side commands a decisive edge based on recent results alone.
Traders should monitor pitching assignments and injury reports released in the 48 hours before first pitch, as starting pitcher quality typically shifts win probability by 3–5 percentage points in either direction. Weather conditions at Oracle Park—particularly wind direction affecting fly balls—warrant attention given the venue's sensitivity to atmospheric variables. Any late roster moves, particularly bullpen reinforcements or position player availability, could alter the probability materially. The Giants' recent performance against left-handed starters and the Rockies' record in evening games may offer additional calibration points as game time approaches.
Live Data & Statistics
Live stats load when the match begins. Current market odds are shown above. Trading volume: $104K.
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 Prediction Today, 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
- 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.
- 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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