Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Kalshi Fees) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Place a position → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Place a position → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Place a position → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Place a position → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Place a position → |
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% |
| O/U 2.5 | 100% |
| Both Teams to Score | 100% |
| 1st Half O/U 0.5 | 100% |
| Sevilla FC O/U 0.5 | 100% |
| Sevilla FC O/U 1.5 | 100% |
| Rayo Vallecano de Madrid O/U 0.5 | 100% |
| Rayo Vallecano de Madrid 1st Half O/U 0.5 | 100% |
| 2nd Half O/U 0.5 | 100% |
| 2nd Half O/U 1.5 | 100% |
| Sevilla FC 2nd Half O/U 0.5 | 100% |
| Sevilla FC 2nd Half O/U 1.5 | 100% |
| Sevilla FC (-1.5) | 0% |
| Rayo Vallecano de Madrid (-1.5) | 0% |
| Sevilla FC (-2.5) | 0% |
| Rayo Vallecano de Madrid (-2.5) | 0% |
| O/U 3.5 | 0% |
| O/U 4.5 | 0% |
| O/U 5.5 | 0% |
| Both Teams to Score in First Half | 0% |
| 1st Half O/U 1.5 | 0% |
| 1st Half O/U 2.5 | 0% |
| Sevilla FC O/U 2.5 | 0% |
| Rayo Vallecano de Madrid O/U 1.5 | 0% |
| Rayo Vallecano de Madrid O/U 2.5 | 0% |
| Sevilla FC 1st Half O/U 0.5 | 0% |
| Sevilla FC 1st Half O/U 1.5 | 0% |
| Rayo Vallecano de Madrid 1st Half O/U 1.5 | 0% |
| Both Teams to Score in Second Half | 0% |
| 2nd Half O/U 2.5 | 0% |
| Rayo Vallecano de Madrid 2nd Half O/U 0.5 | 0% |
| Rayo Vallecano de Madrid 2nd Half O/U 1.5 | 0% |
Market context
Sevilla and Rayo Vallecano meet in La Liga on 15 August at 20:30 CET, marking the season's opening fixture for both clubs. The 0% implied probability reflects either minimal trading volume or a market awaiting substantive information before positions form. Early-season La Liga matches typically see sparse liquidity until team sheets and injury confirmations circulate in the hours preceding kickoff, making this a common pattern rather than a signal of settled expectation.
Historical precedent suggests caution in reading early-August probabilities as predictive. Pre-season form, squad rotation, and fixture congestion (particularly for clubs in European competition) create volatility that resolves only once lineups are announced. Sevilla finished 2024–25 in mid-table; Rayo, promoted via playoff, enters as a structural underdog. Comparable opening-day markets have shifted 15–25 percentage points once team news breaks, especially when key players are unavailable or managers deploy experimental formations.
Traders monitoring this market should track official team announcements from both clubs' social channels and Spanish press (Marca, AS) for injury updates and squad availability by 18:00 CET on match day. Conditional order logic proves useful here: setting triggers on confirmed lineups rather than placing outright positions hours early captures the information release without exposure to pre-announcement drift. API feeds from La Liga's official fixture data will confirm final kickoff time; any schedule shift alters settlement window calculations for automated systems.
Methodology
We track Sevilla FC vs. Rayo Vallecano de Madrid - 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.
FAQ
- Where can I trade this market with the lowest fees?
- Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Kalshi Fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- 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.
- What's the difference between YES and NO shares?
- A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.
- What does Polymarket cost to trade?
- Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
- How fast are USDC deposits?
- Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.
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