Dota 2: Grind Back vs Carstensz (BO3) - The International Southeast Asia Closed Qualifier Playoffs

Platform comparison

Active sub-markets

Market context

Grind Back face Carstensz in a best-of-three lower-bracket match at the Southeast Asia closed qualifier for The International, and the market is effectively pricing a Grind Back win as certain. That looks aggressive against the recent record in the matchup: Carstensz beat Grind Back 2-1 in June in the Esports World Cup closed qualifier, while another listed meeting in May also went Carstensz’s way. Strafe also has Carstensz above Grind Back in its rankings and shows stronger recent form, with Carstensz winning four of their last five compared with Grind Back’s three of five.[1][2][3][4]

For traders, the main line-moving factors are whether the series has already started, whether either side fields a changed roster, and whether the lower-bracket schedule is pushed back by earlier playoff delays. The market only resolves to 50-50 if the match is not played, ends level, or slips beyond the settlement window without a winner, so administrative postponement matters as much as in-game strength. Public match listings indicate the fixture is scheduled for 21 June at 02:00 UTC, but the live status and bracket progression should be checked before assuming a completed result.[2][5]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Dota 2: Grind Back vs Carstensz (BO3) - The International Southeast Asia Closed Qualifier Playoffs on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

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?

On Champions League Prediction, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Champions League Prediction is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.