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 |
|---|---|
| Game 3 Winner | 100% |
| Game 4 Winner | 100% |
| Game 5 Winner | 100% |
| Match Winner | 100% |
| O/U 4.5 Games | 100% |
| O/U 5.5 Games | 100% |
| O/U 6.5 Games | 100% |
| Game 1 Winner | 0% |
| Game 2 Winner | 0% |
| Game 6 Winner | 0% |
Market context
OpTic Gaming and 100 Thieves are set for an Esports World Cup playoff semi-final in Call of Duty, and the market’s **0% YES** line implies the crowd is effectively pricing no chance of an OpTic win. That is a stark outlier against the broader pre-match consensus: recent preview pricing put OpTic among the title contenders, while 100 Thieves were also near the front of the outright market rather than a clear outsider[4]. In other words, the market is not asking whether OpTic are good enough; it is treating them as if they are already out, which creates obvious value only if the event is actually live and the settlement mechanics have not already been compromised by a result elsewhere.
The comparable form line points both ways. 100 Thieves beat OpTic 3-2 in their group-stage meeting on 6 August, which gives the underdog side the most recent head-to-head edge in this Black Ops 7 bracket[6]. But OpTic had been rated around a 33% outright chance before the playoffs and were widely discussed as one of the main championship contenders, so a 0% read on their semi-final chances is far more extreme than the surrounding competitive context[4]. For a handicapper, that usually means the consensus sits with 100 Thieves on recent matchup data, while any contrarian case for OpTic rests on their stronger tournament reputation and the fact that a best-of-seven increases variance.
The main catalysts are straightforward: whether the semi-final actually starts on schedule, whether the bracket order changes, and whether any earlier match disruption forces postponement or a no-contest settlement. Tournament listings and match trackers have the fixture as a BO7 playoff semi-final on 9 August at 14:40 UTC, but market risk here is less about tactics than administration and completion[3]. If the series is delayed beyond the settlement window or not played at all, the contract can fall to 50-50, so traders are watching the event schedule and broadcast confirmation as closely as the teams themselves[6][12].
Methodology
Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.
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
- 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 Who Will Win. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- 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.
- 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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