Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Sport Prediction) 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 |
|---|---|
| Map 1 Winner | 100% |
| Map 2 Winner | 100% |
| Match Winner | 100% |
| Map Handicap: GLS (-1.5) vs Keyd (+1.5) | 100% |
| Map 1 Total Rounds: Over/Under 21.5 | 100% |
| Map 2 Rounds Handicap: Galorys (-3.5) vs Keyd (+3.5) | 100% |
| Map 3 Total Rounds: Over/Under 21.5 | 50% |
| O/U 2.5 Games | 0% |
| Map 2 Total Rounds: Over/Under 21.5 | 0% |
| Map 1 Rounds Handicap: Keyd (-3.5) vs Galorys (+3.5) | 0% |
| Map 1 Total Rounds: Over/Under 24.5 | 0% |
| Map 2 Total Rounds: Over/Under 24.5 | 0% |
Market context
Galorys met Keyd in a best-of-three at the BetBoom Storm group stage, with the match now settled as a 2–0 win for Galorys. The crowd-implied 100% YES before play was consistent with a contest that had already been priced as heavily one-sided, rather than a genuine 50/50.
Recent comparable meetings point in the same direction. The teams split their last notable series history with Galorys leading the head-to-head 3–2 overall, and the most recent BetBoom Storm meeting in May finished 2–0 to Keyd Stars, so this rematch carried some volatility despite the one-sided market stance. Form data published before the match also showed both sides under pressure, with Galorys on roughly 40-50% recent win rates and Keyd slightly lower, which helps explain why traders were leaning on matchup history and map tendencies more than on raw win percentage.[3][6][16][17]
For traders, the key catalysts were the final schedule confirmation, any last-minute roster notices, and whether the series stayed on the announced BetBoom Storm timetable, because the market would only flip to 50-50 if the match was not played, ended level, or slipped beyond the seven-day delay window.[1][13] Public bracket and fixture pages showed the group stage running through 11 August, with Round 4 scheduled on 9 August, so any postponement, forfeit, or coverage gap would have been the main settlement risk rather than team strength alone.[5][13][15]
Methodology
Sports-specific comparison page for Counter-Strike: Galorys vs Keyd (BO3) - BetBoom Storm Group Stage. 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.
- What are live sports odds on Polymarket?
- Some top-tier matches stay open during play — you can trade the half-time probability in the 70th minute. Polymarket mid-prices update second-by-second; any frontend mirroring the order book shows the same movement.
- 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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