Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Review UK) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Trade this market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Trade this market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Trade this market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Trade this market → |
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% |
| 1st Half O/U 1.5 | 100% |
| Chicago Fire FC O/U 0.5 | 100% |
| Chicago Fire FC O/U 1.5 | 100% |
| Portland Timbers O/U 0.5 | 100% |
| Chicago Fire FC 1st Half O/U 0.5 | 100% |
| Chicago Fire FC 1st Half O/U 1.5 | 100% |
| 2nd Half O/U 0.5 | 100% |
| Portland Timbers 2nd Half O/U 0.5 | 100% |
| Chicago Fire FC (-1.5) | 0% |
| Portland Timbers (-1.5) | 0% |
| Chicago Fire FC (-2.5) | 0% |
| Portland Timbers (-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 2.5 | 0% |
| Chicago Fire FC O/U 2.5 | 0% |
| Portland Timbers O/U 1.5 | 0% |
| Portland Timbers O/U 2.5 | 0% |
| Portland Timbers 1st Half O/U 0.5 | 0% |
| Portland Timbers 1st Half O/U 1.5 | 0% |
| Both Teams to Score in Second Half | 0% |
| 2nd Half O/U 1.5 | 0% |
| 2nd Half O/U 2.5 | 0% |
| Chicago Fire FC 2nd Half O/U 0.5 | 0% |
| Chicago Fire FC 2nd Half O/U 1.5 | 0% |
| Portland Timbers 2nd Half O/U 1.5 | 0% |
Market context
Chicago Fire FC host the Portland Timbers at Soldier Field in a non-conference MLS fixture that was scheduled for 6 p.m. ET on 16 August, with Chicago’s kick-off moved earlier to 5 p.m. CT. The crowd-implied 0% YES suggests the market is already pricing the “more markets” side as dead, so the relevant question is whether any late event-processing, line-up, or settlement-edge issue could still create a programme-level discrepancy rather than a football one.
Historically, these markets tend to move only when there is a clear dependency break: a postponed kick-off, a data-provider correction, or a late switch in official match status. Pre-match context pointed the other way, with Chicago entering as the stronger home side and trading around heavy favourite territory, while Portland had been viewed as competitive but less likely to dominate. That makes a 0% reading consistent with a cleanly resolved slate if the match stayed on schedule and the market category simply captured routine sub-markets already exhausted by the close.
For a programmatic trader, the main catalysts are mechanical rather than tactical: confirmed kick-off time, whether the fixture starts and finishes inside the settlement window, and any official changes to team news or match status propagated by the venue or competition feed. Chicago’s own announcement of the earlier start time is the sort of dependency a bot would watch first, then reconcile against live fixture state and settlement timestamps; if those inputs remain aligned, there is little scope for a late repricing.
Methodology
We track Chicago Fire FC vs. Portland Timbers - 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
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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