Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Sport Prediction) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
100% | 0% | 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 |
|---|---|
| O/U 0.5 | 100% |
| O/U 1.5 | 100% |
| Both Teams to Score | 100% |
| Both Teams to Score in First Half | 100% |
| 1st Half O/U 0.5 | 100% |
| 1st Half O/U 1.5 | 100% |
| Arsenal FC O/U 0.5 | 100% |
| Como 1907 O/U 0.5 | 100% |
| Arsenal FC 1st Half O/U 0.5 | 100% |
| Como 1907 1st Half O/U 0.5 | 100% |
| Arsenal FC (-1.5) | 0% |
| Como 1907 (-1.5) | 0% |
| Arsenal FC (-2.5) | 0% |
| Como 1907 (-2.5) | 0% |
| O/U 2.5 | 0% |
| O/U 3.5 | 0% |
| O/U 4.5 | 0% |
| O/U 5.5 | 0% |
| 1st Half O/U 2.5 | 0% |
| Arsenal FC O/U 1.5 | 0% |
| Arsenal FC O/U 2.5 | 0% |
| Como 1907 O/U 1.5 | 0% |
| Como 1907 O/U 2.5 | 0% |
| Arsenal FC 1st Half O/U 1.5 | 0% |
| Como 1907 1st Half O/U 1.5 | 0% |
| Both Teams to Score in Second Half | 0% |
| 2nd Half O/U 0.5 | 0% |
| 2nd Half O/U 1.5 | 0% |
| 2nd Half O/U 2.5 | 0% |
| Arsenal FC 2nd Half O/U 0.5 | 0% |
| Arsenal FC 2nd Half O/U 1.5 | 0% |
| Como 1907 2nd Half O/U 0.5 | 0% |
| Como 1907 2nd Half O/U 1.5 | 0% |
Market context
Arsenal will face Como in a pre-season friendly on 12 August at 2:30 PM ET, ahead of the 2024–25 campaign. The 0% implied probability on additional markets suggests minimal trading activity or settlement ambiguity around secondary outcomes, typical for club friendlies where primary results dominate liquidity.
Pre-season friendlies between established Premier League sides and Serie A opponents historically generate sparse secondary-market interest because the fixture carries no competitive stakes. Arsenal's recent summer activity—including the arrivals of Riccardo Calafiori and Mikel Merino—means Mikel Arteta will likely field a rotated squad to manage minutes and injury risk. Como, newly promoted to Serie A, will use the fixture to build fitness before their domestic season opener. The absence of established betting patterns around such matches means traders should expect low volume and wide spreads on peripheral outcomes.
Catalysts to monitor include official team-sheet releases 24–48 hours before kick-off, which will clarify whether either side deploys first-choice personnel or experimental lineups. Arsenal's injury status—particularly any late-breaking concerns with key defenders or midfielders—could shift expectations around match flow. Como's preparation schedule and any pre-match statements from manager Cesc Fàbregas regarding squad rotation will signal tactical intent. The settlement window closing at 18:30 UTC on 12 August leaves minimal post-match arbitrage opportunity, concentrating risk into the live period.
Methodology
Sports-specific comparison page for Arsenal FC vs. Como 1907 - More Markets. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi or Manifold.
Resolution & payout
Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.
UK Frequently Asked Questions
- Are prediction markets better than sports betting?
- Prediction markets tend toward tighter odds than bookmakers because they use peer-to-peer exchange rather than bookmaker margin. On major matches, Polymarket quotes typically sit 2-5% closer to the true probability model than bet365 or DraftKings.
- When do sports markets resolve?
- Typically within hours of the official final whistle. Polymarket uses UMA Optimistic Oracle with source URLs pointing at official league data feeds — e.g. the Premier League for EPL markets, UEFA for Champions League, FIFA for World Cup.
- 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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