Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Trump Prediction) Pick polygram.ink (preferred broker) |
55% | 45% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
55% | 45% | 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 |
|---|---|
| Total Kills Over/Under 50.5 in Game 1? | 55% |
| Total Kills Over/Under 50.5 in Game 2? | 54% |
| Ends in Daytime | 52% |
| Ends in Daytime | 52% |
| Ends in Daytime | 52% |
| First Blood in Game 2? | 51% |
| O/U 2.5 Games | 50% |
| First Blood in Game 1? | 50% |
| Game 1 Winner | 46% |
| Game 2 Winner | 46% |
| Both Teams Beat Roshan | 45% |
| Match Winner | 42% |
| Both Teams Beat Roshan | 37% |
| Both Teams Beat Roshan | 36% |
| Both Teams Destroy Barracks | 35% |
| Any Player Ultra Kill | 35% |
| Game Handicap: BB (-1.5) vs Iron Wing (+1.5) | 30% |
| Both Teams Destroy Barracks | 27% |
| Both Teams Destroy Barracks | 27% |
| Any Player Ultra Kill | 26% |
| Any Player Ultra Kill | 26% |
| Game Handicap: IW (-1.5) vs BoomBoys (+1.5) | 24% |
| Any Player Rampage | 19% |
| Any Player Rampage | 14% |
| Any Player Rampage | 14% |
Market context
Iron Wing and BoomBoys will contest a lower-bracket round-one match at The International 2026, Dota 2's premier annual championship. The best-of-three fixture is scheduled for 20 August 2026 at 22:00 ET, with settlement occurring by 21 August 08:00 UTC. The 46% crowd probability favouring Iron Wing suggests meaningful uncertainty about which team advances, despite Iron Wing's slight implied edge.
Historical performance at The International provides the clearest frame for assessing this matchup. Lower-bracket round-one matches typically feature teams ranked between fourth and eighth at their respective regions' qualifying tournaments; outcomes hinge heavily on meta adaptation and recent LAN performance rather than seeding alone. Teams entering the lower bracket from upper-bracket elimination often carry momentum advantages, whilst those arriving directly from regional qualifiers may lack recent high-stakes experience. Iron Wing's current probability reflects neither overwhelming dominance nor substantial underdog status, consistent with competitive parity at this tournament stage.
Traders should monitor team roster confirmations and any last-minute substitutions through to the match start, as Dota 2 rosters occasionally shift during international tournaments. Patch updates released in the fortnight preceding The International can substantially alter hero viability and team preparation timelines. Scheduling delays remain possible given the tournament's compressed format; any postponement must occur by 3 September 2026 at 23:59 ET per market rules. Recent tournament results from both teams—particularly performances at regional qualifiers and any warm-up events in August—will provide the most actionable data for reassessing the current 46% probability.
Methodology
This page tracks Dota 2: Iron Wing vs BoomBoys (BO3) - The International Playoffs across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. For users geo-blocked from Polymarket directly, brokers like Trump Prediction provide a 0%-fee route into the same order book.
Resolution & payout
For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.
UK Frequently Asked Questions
- How accurate are political prediction markets?
- Historically more accurate than polls. Polymarket's Brier score on US 2024 elections was ~0.11 — better than 538 (~0.14) and every mainstream poll. Markets aggregate information with real skin in the game.
- What resolution source is used for elections?
- Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.
- Can prediction markets influence election outcomes?
- Markets reflect expectations rather than create them. Studies show public-facing markets can anchor expectations, but don't influence the underlying outcome. Political markets are information, not advocacy.
- How fast do political markets react to news?
- High-liquidity markets move within seconds to minutes. A Trump tweet on the economy can shift the "Trump 2024" market 2-5 points before mainstream media has written anything.
- Are UK election prediction markets available from the UK?
- Yes. Betfair Exchange and Smarkets offer UKGC-regulated UK election markets (seat counts, party share, constituency results). Polymarket also lists UK election contracts with deeper global liquidity. Betfair winnings are typically tax-free for UK individuals; Polymarket profits are subject to HMRC CGT.
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