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

Platform comparison

Market context

Iron Wing face Team Yandex in Round 5 of The International's group stage on 15 August 2026, with the match scheduled for 08:00 ET. The 100% implied probability reflects either exceptionally strong confidence in one team's superiority or, more likely, a thin market with minimal trading activity. At this stage of The International—a best-of-three format—both teams will have played four matches already, establishing clear form trajectories. The settlement window closes at 17:50 ET the same day, allowing roughly nine hours post-match for resolution.

Group stage matches at The International rarely fail to materialise once scheduled, though technical issues or player health emergencies have occasionally forced postponements within the permitted 14-day window. Historical precedent suggests cancellations are exceptionally rare; the tournament's infrastructure and broadcast commitments typically ensure matches proceed as scheduled. The decisive factor here is likely one team's demonstrated dominance in early rounds rather than any structural uncertainty about the fixture itself.

Traders should monitor official Valve announcements for any schedule changes or team roster updates in the 48 hours before match time. Streaming platforms and esports news outlets will carry pre-match analysis that may shift market perception if unexpected roster changes or player illness emerge. The tight settlement window means any postponement would require immediate rescheduling; delays beyond 29 August would trigger a 50-50 resolution regardless of eventual outcome.

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

UK Frequently Asked Questions

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Prediction Today. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

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%.