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

Platform comparison

Market context

Iron Wing and Team Spirit will contest the upper bracket quarterfinal of The International 2026 Dota 2 championship on 19 August at 22:00 ET, with the winner advancing directly to the semifinals. The best-of-three format means the first team to secure two maps wins the match. The current crowd-implied probability of 53% for Iron Wing suggests near-parity, though traditional sportsbooks have historically favoured Team Spirit in comparable International matchups by 2–4 percentage points. This divergence warrants scrutiny, as prediction markets often price in late roster changes or form shifts that conventional odds lag in reflecting.

Team Spirit's International pedigree—including a 2021 championship and consistent deep runs—typically commands a structural advantage in playoff scenarios, yet Iron Wing's qualification to this stage indicates sufficient recent form to trouble favourites. The settlement window closes 20 August at 08:00 UTC, allowing roughly 30 hours post-match for result confirmation. Traders should monitor official schedule announcements from the International organisers for any postponement notices, which would extend the deadline to 2 September. Recent patch updates to Dota 2 (typically released 2–3 weeks before majors) can shift hero viability and team preparation timelines; any last-minute balance changes in early August could favour whichever roster has stronger adaptability metrics.

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Best Prediction Markets, which mirrors the Polymarket order book directly.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Best Prediction Markets trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.