Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Prediction Market UK) Pick polygram.ink (preferred broker) |
67% | 33% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
67% | 33% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | See live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | See live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | See live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | See live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| O/U 0.5 | 67% |
| CR Vasco da Gama O/U 0.5 | 59% |
| Club Olimpia O/U 2.5 | 50% |
| Both Teams to Score in Second Half | 50% |
| 2nd Half O/U 0.5 | 50% |
| 2nd Half O/U 1.5 | 50% |
| 2nd Half O/U 2.5 | 50% |
| CR Vasco da Gama 2nd Half O/U 0.5 | 50% |
| CR Vasco da Gama 2nd Half O/U 1.5 | 50% |
| Club Olimpia 2nd Half O/U 0.5 | 50% |
| Club Olimpia 2nd Half O/U 1.5 | 50% |
| O/U 1.5 | 28% |
| Club Olimpia O/U 0.5 | 21% |
| CR Vasco da Gama O/U 1.5 | 20% |
| CR Vasco da Gama (-1.5) | 17% |
| Both Teams to Score | 12% |
| O/U 2.5 | 9% |
| CR Vasco da Gama (-2.5) | 4% |
| CR Vasco da Gama O/U 2.5 | 4% |
| O/U 3.5 | 2% |
| Club Olimpia O/U 1.5 | 2% |
| Club Olimpia (-1.5) | 1% |
| Club Olimpia (-2.5) | 1% |
| O/U 4.5 | 0% |
| O/U 5.5 | 0% |
| Both Teams to Score in First Half | 0% |
| 1st Half O/U 0.5 | 0% |
| 1st Half O/U 1.5 | 0% |
| 1st Half O/U 2.5 | 0% |
| CR Vasco da Gama 1st Half O/U 0.5 | 0% |
| CR Vasco da Gama 1st Half O/U 1.5 | 0% |
| Club Olimpia 1st Half O/U 0.5 | 0% |
| Club Olimpia 1st Half O/U 1.5 | 0% |
Market context
CR Vasco da Gama will face Club Olimpia in a Copa Sudamericana fixture on 13 August at 6:00 PM ET. This prediction market settles YES if additional betting markets become available for the match; it settles NO if they do not. When you purchase a YES share, you're wagering that more markets will open before the settlement deadline on 13 August at 10:00 PM ET. A NO share represents the opposite position—that no additional markets materialise.
The 17% implied probability reflects relative scarcity in Copa Sudamericana coverage compared to major continental competitions. The Copa Libertadores typically attracts broader market depth from prediction platforms, whilst the Sudamericana—though prestigious—draws thinner liquidity. Historical precedent suggests that matches involving Brazilian clubs like Vasco da Gama do generate secondary markets, particularly if the fixture gains media attention or if either team advances deeper into the tournament. However, market expansion depends on platform discretion and demand, making the current probability a reasonable reflection of uncertainty.
Traders should monitor fixture confirmations and any tournament postponements announced by CONMEBOL, the South American confederation governing the competition. Vasco da Gama's recent form and Olimpia's standing in the tournament bracket may influence whether platforms judge the match significant enough to warrant additional markets. The settlement window closes shortly after kick-off, so any market-opening decisions will likely be made in the 48 hours preceding the match. Recent coverage of Copa Sudamericana fixtures on major sportsbooks offers a baseline for assessing whether this particular tie meets typical thresholds for expanded market offerings.
Methodology
We track CR Vasco da Gama vs. Club Olimpia - More Markets across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.
Resolution & payout
Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.
Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.
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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