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Dota 2: Iron Wing vs BoomBoys (BO3) - The International Playoffs

Five-platform snapshot of "Dota 2: Iron Wing vs BoomBoys (BO3) - The International Playoffs" — live Polymarket pricing, plus how Kalshi, Betfair and Manifold structure the same contract.

Total Kills Over/Under 50.5 in Game 2? 54% Total Kills Over/Under 50.5 in Game 1? 54% Ends in Daytime 52% Ends in Daytime 52% Volume: $2.8M Liquidity: $2.2M Closes: 21 Aug 2026
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Dota 2: Iron Wing vs BoomBoys (BO3) - The International Playoffs

Platform comparison

PlatformYES oddsNO oddsFeeKYCSettlement
Polymarket (via PolyGram) Pick
polygram.ink (preferred broker)
54% 46% 0% (USDC on-chain) No-KYC up to $1,500 USDC, auto via UMA oracle Open the market →
Polymarket (direct)
polymarket.com
54% 46% 0% Geo-blocked in US/UK/EU USDC, on-chain Open the market →
Kalshi
kalshi.com
Up to 7% per trade US-only, KYC required USD Open the market →
Betfair Exchange
betfair.com
2-5% commission Full KYC from first trade GBP / EUR Open the market →
Manifold Markets
manifold.markets
Play-money (mana) None — play-money Mana (no cash-out) Open the market →

Outcome probabilities

Current market-implied probability for each outcome, from the live order book.

OutcomeProbability
Total Kills Over/Under 50.5 in Game 2?54%
Total Kills Over/Under 50.5 in Game 1?54%
Ends in Daytime52%
Ends in Daytime52%
Ends in Daytime52%
First Blood in Game 2?51%
O/U 2.5 Games50%
First Blood in Game 1?50%
Game 1 Winner46%
Game 2 Winner46%
Both Teams Beat Roshan45%
Match Winner42%
Both Teams Beat Roshan37%
Both Teams Beat Roshan36%
Both Teams Destroy Barracks36%
Any Player Ultra Kill36%
Game Handicap: BB (-1.5) vs Iron Wing (+1.5)30%
Both Teams Destroy Barracks27%
Any Player Ultra Kill27%
Both Teams Destroy Barracks27%
Any Player Ultra Kill27%
Game Handicap: IW (-1.5) vs BoomBoys (+1.5)24%
Any Player Rampage20%
Any Player Rampage14%
Any Player Rampage14%

Market context

Iron Wing and BoomBoys meet in The International 2026 lower bracket's opening round, a best-of-three Dota 2 fixture scheduled for 20 August at 10:00 PM ET. The conditional token currently trades at 0.46 USDC on Polygon, implying roughly even odds despite Iron Wing holding the slight edge in market perception. This pricing reflects genuine uncertainty: both teams carry recent form questions, and lower bracket openers frequently produce upsets when preparation gaps emerge or meta-read advantages shift between squads.

Comparable lower bracket matchups from prior International tournaments show that seeding and recent LAN performance matter considerably, though not decisively. Teams entering the lower bracket from group stage elimination often carry momentum disadvantages, yet squads with strong regional qualifier performances have frequently punched above their seeding. The 46% probability suggests traders view this as genuinely competitive rather than a mismatch, which aligns with historical patterns where lower bracket round-one matches rarely feature overwhelming favourites.

Traders should monitor team roster confirmations and any last-minute substitutions announced before the 20 August fixture, as Dota 2 roster changes can shift competitive balance substantially. Schedule adherence matters too: The International typically maintains tight scheduling, but any postponement triggers the 14-day rescheduling window ending 3 September. Watch for official Valve announcements regarding patch changes or map pool adjustments in the days before play, as these can disproportionately favour one team's preparation depth. Recent bootcamp reports and scrim results, whilst unofficial, often surface on team social channels and can shift informed trader positioning.

Methodology

We track Dota 2: Iron Wing vs BoomBoys (BO3) - The International Playoffs across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

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.
How does resolution work?
Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.
What's the difference between YES and NO shares?
A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.
What does Polymarket cost to trade?
Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
How fast are USDC deposits?
Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.
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