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

Platform comparison

Market context

BoomBoys and OG face off in a best-of-three opening fixture at The International, Dota 2's premier annual championship, with the match originally scheduled for 12 August at 10:00PM ET. The Polymarket contract currently prices BoomBoys' victory at 68% implied probability, reflecting the Southeast Asian squad's recent form and perceived matchup advantage. Settlement hinges on a definitive result within seven days of the scheduled start; any cancellation, tie, or extended delay beyond that window triggers a 50-50 resolution, whilst forfeiture or disqualification by either team settles according to the winning party.

OG enters as a two-time International champion with established pedigree in high-stakes Dota, though the organisation has undergone roster changes heading into this event. BoomBoys, representing the stronger regional qualifier, carry momentum from their qualification run and have demonstrated consistency against comparable opposition. Historical precedent suggests that regional strength and recent form typically outweigh legacy credentials in group-stage matchups, particularly when the favourite carries a 68% valuation—a probability range where upsets occur regularly enough to reward contrarian positions but remain statistically unlikely.

Traders should monitor official The International schedule confirmations and any last-minute roster or technical issues that could delay proceedings. Patch updates or hero pool adjustments announced immediately before the event can shift preparation advantages, particularly for teams with different scrim access or coaching infrastructure. The settlement window closes 13 August at 08:00 UTC, providing a narrow margin for resolution; any match postponement beyond 19 August would trigger the tie resolution regardless of eventual outcome.

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 PolyGram, which mirrors the Polymarket order book directly.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

UK Frequently Asked Questions

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.

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%.