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

Platform comparison

Market context

Team Spirit face Xtreme Gaming in a best-of-three opening fixture at The International group stage on 13 August. The 63% implied probability favours Team Spirit, reflecting their status as a top-tier European organisation against a Chinese squad with less consistent international pedigree.

Team Spirit's recent record at The International tournaments and major Dota Pro League events provides the foundation for the favourite pricing. They've qualified for multiple International main events and typically field rosters capable of competing against tier-one Chinese teams. Xtreme Gaming, whilst competitive in the Chinese regional circuit, have historically struggled to maintain form in the highest-stakes international environments. Previous International group stages show European teams with Team Spirit's infrastructure and player calibre winning such matchups roughly 60–65% of the time against mid-tier Chinese opposition, which aligns closely with current market pricing.

The settlement window closes at 13:00 UTC on 13 August, creating a tight window around the scheduled 06:00 UTC start time. Traders should monitor official The International schedule confirmations for any delays or format changes, as the seven-day cancellation clause means postponements beyond 20 August would trigger a 50-50 resolution. Recent patch updates and hero bans announced before the tournament can shift team preparation priorities, particularly affecting how Xtreme Gaming's more limited hero pool adapts compared to Spirit's flexible approach. Any roster changes or player illness announcements in the 48 hours before the match would be material to reassess the current pricing.

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.

FAQ

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.

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.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Who Will Win 2026 trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.