Dota 2: Team Spirit vs Xtreme Gaming (BO3) - The International Group Stage

Platform comparison

Market context

Team Spirit and Xtreme Gaming will contest a best-of-three Dota 2 match during The International's group stage on 13 August at 1:00 AM ET. The Polymarket contract currently prices Team Spirit victory at 60%, reflecting conditional token valuations on Polygon denominated in USDC. This implies roughly 40% probability assigned to Xtreme Gaming, with settlement contingent on match completion within seven days of the scheduled start time.

Team Spirit enters as the stronger historical unit. The Russian organisation won The International 10 in 2021 and has consistently qualified for Valve's premier tournament across multiple years, establishing a track record of adapting to patch cycles and international competition. Xtreme Gaming, a Chinese squad, competes at a lower tier within regional circuits and has limited prior International appearances. Historical matchups between top-tier European and CIS teams against mid-tier Chinese challengers typically favour the former, though Dota 2's patch-dependent metagame occasionally produces upsets when hero pools shift dramatically before group play.

Traders should monitor official schedule confirmations from The International organisers, as venue delays or technical issues have occasionally pushed matches beyond their initial windows. Recent patch notes released ahead of the tournament will shape hero availability and itemisation strategies; significant nerfs to core heroes in either team's signature pool could compress the 20-point probability gap. Team composition announcements during the tournament's opening days may also shift market pricing if either squad reveals unexpected strategic pivots or player substitutions.

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

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

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 Polymarket Scam?. 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%.