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

Platform comparison

Market context

BoomBoys and OG face off in the opening round of The International's group stage on 12 August, with the match scheduled for 22:00 ET. The crowd has priced BoomBoys at 70 per cent implied probability, positioning them as clear favourites in this best-of-three encounter. OG, despite their storied pedigree in Dota 2, enter as the underdog at roughly 30 per cent.

OG's recent form and roster stability warrant scrutiny before accepting the consensus. The organisation has cycled through multiple lineups in the past eighteen months, and their qualification for The International itself came through the last-chance qualifier rather than a direct invite. BoomBoys, by contrast, earned their spot through consistent regional performance in Southeast Asia and carry momentum from recent tournament placings. However, OG's two-time International champions' pedigree and institutional knowledge in high-stakes Dota cannot be discounted; they have repeatedly punched above their seeding in group stages. The 70–30 split may fairly reflect BoomBoys' current trajectory, but it leaves limited margin for OG's historical tendency to elevate under pressure.

Key variables include roster health and patch familiarity heading into the event. Any last-minute roster changes, visa delays, or technical issues affecting either team's preparation could shift the match dynamics substantially. The settlement window closes 13 August at 08:00 UTC, allowing a full day buffer beyond the scheduled start time. Traders should monitor official The International communications for schedule confirmations and any announcements regarding team availability in the 48 hours preceding the match.

Methodology

This page reviews Dota 2: BoomBoys vs OG (BO3) - The International Group Stage across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Who Will Win 2026, which mirrors the Polymarket order book at 0% fees.

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

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 Who Will Win 2026. 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.

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 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.

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.