Dota 2: Iron Wing vs Team Yandex (BO3) - The International Group Stage

Platform comparison

Market context

Iron Wing and Team Yandex will contest a best-of-three Dota 2 match during The International's group stage on 15 August 2026, with the fixture scheduled for 8:00 AM ET. The Polymarket contract currently trades at 100% implied probability for an Iron Wing victory, reflecting either overwhelming confidence in their superiority or, more likely, illiquidity in the conditional token pair on Polygon. At this extreme price, the YES token (Iron Wing win) commands full market weight whilst the NO token (Team Yandex win) carries negligible value in USDC terms, suggesting minimal trading activity has occurred since contract creation.

Historical precedent from previous International tournaments indicates that group-stage matches between regional qualifiers and established rosters frequently produce upsets, particularly when teams face unfamiliar opponents or encounter meta shifts between qualifier events and the main tournament. Team compositions, patch timing, and recent scrim results typically matter more than seeding alone. The 100% probability here likely reflects incomplete market participation rather than genuine certainty about the match outcome.

Traders should monitor official The International schedule confirmations, any roster changes announced before 15 August, and patch notes released in the days preceding the fixture. Recent Dota 2 esports coverage from sources including Liquipedia and team social channels will signal whether either squad has experienced personnel disruptions or strategic adjustments. The settlement window closes at 17:50 UTC on match day, allowing approximately nine hours after the scheduled start time for completion and resolution on-chain.

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 Kalshi UK, 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.

UK Frequently Asked Questions

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.

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%.