Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Sport Prediction) Pick polygram.ink (preferred broker) |
73% | 27% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
73% | 27% | 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 |
|---|---|
| Match Winner | 73% |
| Game 2 Winner | 67% |
| Game 1 Winner | 66% |
| First Blood in Game 2? | 52% |
| Both Teams Slay Baron Nashor | 50% |
| Both Teams Slay a Dragon | 50% |
| Both Teams Destroy Inhibitors | 50% |
| Any Player Quadra Kill | 50% |
| Any Player Penta Kill | 50% |
| Odd/Even Total Kills | 50% |
| Both Teams Slay Baron Nashor | 50% |
| Both Teams Slay a Dragon | 50% |
| Both Teams Destroy Inhibitors | 50% |
| Any Player Quadra Kill | 50% |
| Any Player Penta Kill | 50% |
| Odd/Even Total Kills | 50% |
| Both Teams Slay Baron Nashor | 50% |
| Both Teams Slay a Dragon | 50% |
| Both Teams Destroy Inhibitors | 50% |
| Any Player Quadra Kill | 50% |
| Any Player Penta Kill | 50% |
| Odd/Even Total Kills | 50% |
| Total Kills Over/Under 30.5 in Game 2? | 50% |
| First Blood in Game 1? | 49% |
| Total Kills Over/Under 30.5 in Game 1? | 48% |
| Game Handicap: MKOI (-1.5) vs GIANTX (+1.5) | 46% |
| O/U 2.5 Games | 43% |
| Total Kills Over/Under 33.5 in Game 1? | 37% |
| Total Kills Over/Under 33.5 in Game 2? | 37% |
Market context
Movistar KOI face GIANTX in an LEC regular-season best-of-three, and the market’s 66% YES price is broadly consistent with the matchup edge KOI have held in prior meetings. BO3.gg’s current preview says KOI have dominated the head-to-head historically, with an 86% win record against GIANTX in previous meetings, while GIANTX’s own recent-month form has been stronger in some windows but still sits behind KOI on the matchup profile[1]. That sort of split helps explain why KOI can be the shorter-priced side even when their immediate run is not spotless.
Recent form, though, is the main reason the probability is not even higher. BO3.gg notes KOI came in on three straight losses and a 0.0 recent-month win rate, despite a more stable half-year baseline, while GIANTX have shown enough upside to beat stronger opposition and pick up decisive map wins[1]. Comparable market previews earlier in the split also leaned on KOI’s better consistency and GIANTX’s weaker record against top teams, which is the same pattern traders are reading into here[9][15].
The key catalysts are line-up confirmation, any late substitution news, and whether either team arrives with a rest or schedule edge after earlier stage matches. The listing for this fixture shows it as a same-day BO3, so a delay, forfeiture, or cancellation would matter as much as the competitive form because the market only resolves normally if a winner is completed within the settlement window[1]. If no credible injury, roster, or scheduling issue emerges before draft, the price is likely to stay anchored around KOI’s historical advantage rather than swing sharply on reputation alone.
Methodology
Sports-specific comparison page for LoL: Movistar KOI vs GIANTX (BO3) - LEC Regular Season. 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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