Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Who Will Win) 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 |
|---|---|
| Real Betis Seville (-1.5) | 100% |
| O/U 0.5 | 100% |
| O/U 1.5 | 100% |
| O/U 2.5 | 100% |
| O/U 3.5 | 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% |
| 1st Half O/U 2.5 | 100% |
| Arsenal FC O/U 0.5 | 100% |
| Real Betis Seville O/U 0.5 | 100% |
| Real Betis Seville O/U 1.5 | 100% |
| Real Betis Seville O/U 2.5 | 100% |
| Arsenal FC 1st Half O/U 0.5 | 100% |
| Real Betis Seville 1st Half O/U 0.5 | 100% |
| Real Betis Seville 1st Half O/U 1.5 | 100% |
| Real Betis Seville 2nd Half O/U 0.5 | 1% |
| Arsenal FC (-1.5) | 0% |
| Arsenal FC (-2.5) | 0% |
| Real Betis Seville (-2.5) | 0% |
| O/U 4.5 | 0% |
| O/U 5.5 | 0% |
| Arsenal FC O/U 1.5 | 0% |
| Arsenal FC O/U 2.5 | 0% |
| Arsenal FC 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% |
| Real Betis Seville 2nd Half O/U 1.5 | 0% |
Market context
Arsenal’s friendly with Real Betis in Dublin is priced at a crowd-implied **0% YES** for the “more markets” contract, so the market is effectively treating the outcome as a near-lock against the relevant selection rather than a balanced contest. In handicapper terms, that makes Arsenal the clear **favourite** and Betis the **underdog**, with consensus leaning heavily towards the Premier League side even though friendlies can swing on rotation and experimental line-ups.[3][4][9]
The comparison set points to a tighter on-pitch contest than the market implies. Arsenal’s pre-season has been shaped by squad management and absentees, while Betis arrived with better match sharpness after several summer fixtures, which is the kind of setup that can create contrarian value if Arsenal rotate heavily or struggle for rhythm.[3][9] Betis also have credible recent competitive form, and the sides had no prior senior head-to-head, so the market is not leaning on direct historical evidence here.[12] That absence of a strong head-to-head record can make the 0% YES look more like an overconfident extrapolation than a fully tested price.[12]
The main catalysts are team news, late squad changes and the final shape of Arsenal’s rotation, especially whether first-choice attackers and midfielders are held back or given minutes.[3][14] Kick-off was scheduled for 7:30pm BST at the Aviva Stadium, and reports noted the match’s timing in the middle of Arsenal’s summer travel and transfer-window backdrop, which can affect selection patterns more than in a normal competitive fixture.[4][16] If Betis field a stronger-than-expected XI or Arsenal use a younger, experimental side, that is where a contrarian position against the crowd consensus would usually gain traction.[3][9]
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 Who Will Win, which mirrors the Polymarket order book directly.
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%.
Trade Arsenal FC vs. Real Betis Seville - More Markets on Who Will Win
Live order book, 0% fees, USDC settlement in seconds.
Open live market →