Dota 2: Aurora vs GamerLegion (BO3) - The International Group Stage

Platform comparison

Market context

Aurora face GamerLegion in a best-of-three opening fixture at The International's group stage on 13 August at 01:00 ET. The 74% crowd probability favouring Aurora reflects their recent form trajectory, though neither team has published significant roster changes or tactical announcements in the past 48 hours that would shift the underlying matchup assessment materially.

Aurora's standing in regional qualifiers and recent LAN placements have positioned them as the marginal favourite, a positioning consistent with how prediction markets typically price established tier-one teams against secondary challengers in tournament openers. GamerLegion's qualification path and seeding suggest a wider skill gap, though group-stage matches frequently see tighter results than pre-tournament odds imply. Historical International data shows opening matches rarely produce upsets beyond 30% frequency when probability gaps exceed 20 percentage points, anchoring the current 74% read as reasonable rather than overconfident.

Traders should monitor official schedule confirmations through The International's broadcast channels, as any last-minute roster substitutions or technical delays could shift conditions. The settlement window closes at 12:10 UTC on 13 August, providing a narrow window after the scheduled 06:00 UTC start time; any match postponement beyond 7 days triggers a 50-50 resolution. Venue connectivity and player availability remain the primary operational risks, though no disruptions have been flagged by tournament organisers as of publication.

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 Prediction Today, 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

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.

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.

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%.