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

Platform comparison

Market context

OG face GamerLegion in Round 5 of The International 2026 group stage on 15 August at 05:30 ET. The 0% implied probability reflects either extreme confidence in OG's superiority or a technical issue with market liquidity rather than genuine uncertainty about the outcome. OG have won two consecutive International titles (2018, 2019) and remain amongst the tournament's most consistent performers, whilst GamerLegion qualified through the regional qualifiers and represent a substantially lower tier of competition. The matchup itself carries minimal drama—this is a heavily favoured fixture on paper.

Historical precedent suggests group-stage matches at The International rarely fail to complete. Cancellations or postponements occur almost exclusively due to player illness, internet infrastructure failure at the venue, or unforeseen scheduling conflicts—events that affect perhaps 1–2% of matches across a full tournament run. The settlement window closes at 15:35 ET on the scheduled date, allowing a five-minute buffer for technical delays. Rescheduling provisions extend to 29 August, though group-stage matches are typically prioritised for same-day completion to maintain tournament momentum.

Traders should monitor official Valve announcements regarding venue conditions, player roster confirmations, and any last-minute bracket adjustments in the 48 hours prior. Recent esports tournaments have experienced occasional stream delays but rarely match cancellations. The primary risk factor remains unforeseen circumstances at the venue itself rather than competitive uncertainty. Any announcement of player substitutions or team roster changes would warrant attention, though such moves are uncommon at this stage of The International.

Methodology

We track Dota 2: OG vs GamerLegion (BO3) - The International Group Stage 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

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%.