Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Sport Prediction) Pick polygram.ink (preferred broker) |
75% | 25% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
75% | 25% | 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 | 75% |
| Game 2 Winner | 69% |
| Game 1 Winner | 65% |
| Total Kills Over/Under 50.5 in Game 2? | 63% |
| Total Kills Over/Under 50.5 in Game 1? | 63% |
| Ends in Daytime | 50% |
| Both Teams Beat Roshan | 50% |
| Both Teams Destroy Barracks | 50% |
| Any Player Ultra Kill | 50% |
| Any Player Rampage | 50% |
| Ends in Daytime | 50% |
| Both Teams Beat Roshan | 50% |
| Both Teams Destroy Barracks | 50% |
| Any Player Ultra Kill | 50% |
| Any Player Rampage | 50% |
| Ends in Daytime | 50% |
| Both Teams Beat Roshan | 50% |
| Both Teams Destroy Barracks | 50% |
| Any Player Ultra Kill | 50% |
| Any Player Rampage | 50% |
| First Blood in Game 2? | 50% |
| First Blood in Game 1? | 50% |
| Total Kills Over/Under 45.5 in Game 1? | 50% |
| Game Handicap: BoomBoys (-1.5) vs OG (+1.5) | 48% |
| O/U 2.5 Games | 43% |
| Total Kills Over/Under 55.5 in Game 1? | 38% |
Market context
BoomBoys and OG will meet in a best-of-three opening fixture at The International 2024 group stage on 12 August at 10:00 PM ET. The 68% crowd probability favours OG, reflecting their status as a two-time International champion with a more established recent competitive record. BoomBoys, the Southeast Asian representatives, qualified through regional qualifiers and enter as relative underdogs despite strong domestic performances throughout 2024.
OG's recent form has been mixed heading into the tournament. The organisation restructured its roster following disappointing placements at the Dota Pro Circuit majors earlier in the year, with new coaching staff brought in to refine mid-game execution. BoomBoys conversely demonstrated consistency in their regional circuit, though their international LAN experience remains limited compared to OG's veteran core. Historical precedent suggests established International competitors with institutional knowledge of the event format—drafting patterns, stage timing, crowd dynamics—maintain an edge in opening matches, particularly in best-of-three formats where preparation depth matters.
Traders should monitor official team announcements regarding final roster confirmations and any last-minute coaching adjustments through to the settlement window closure on 13 August. Schedule delays remain possible given The International's complex logistics; any postponement beyond seven days without resolution triggers a 50-50 split. Watch for pre-match analysis from established Dota 2 correspondents at esports outlets covering team preparation and scrim results in the days immediately preceding the fixture, as these often signal tactical readiness and confidence levels not yet reflected in betting markets.
Methodology
Sports-specific comparison page for Dota 2: BoomBoys vs OG (BO3) - The International 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.
- Can I bet on individual matches?
- Yes, Polymarket lists every major Premier League / Champions League / World Cup match as its own market. Liquidity varies — top matches like El Clásico or a semi-final often have six-figure pools, lower-league games closer to three-figure.
- 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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