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

Platform comparison

Active sub-markets

Market context

Execration versus Grind Back is a lower-bracket semifinal in the SEA closed qualifier for The International, and the market is already priced at a **100% YES** crowd view for Execration. That is much tighter than most esports books would display, because venue-style prediction markets show crowd-implied probability, while platforms such as Kalshi, Betfair and Smarkets usually present prices as decimal odds or exchange-style percentages after fees rather than a simple consensus read. On comparable Dota 2 qualifier matches, third-party prediction sites have often treated Grind Back as a live underdog rather than a near-certainty, which makes the current crowd price look unusually one-sided relative to recent match-by-match form. [1][3][8]

The clearest recent comparator is Grind Back’s playoff run, which included a 2-0 win over Carstensz on 21 June after they had been priced as the outsider in that match preview, showing they can outperform expectations in a short series. [3] That matters because BO3 elimination games can swing sharply on draft quality, side selection and map momentum, and those factors are exactly where exchange markets can diverge from static forecast pages. If you are comparing books, Kalshi-style contracts are typically cleaner to read as a direct event probability, whereas Betfair and Smarkets can reflect a narrower executable price once commission is included; KYC access is also broader on some platforms than others, so the same event can trade at different effective levels across books. [4][5]

For this market, the main catalysts are operational rather than narrative: confirm the bracket has not been reshuffled, check whether the match has started on schedule, and watch for any valve or organiser postponement that could push settlement rules towards 50-50 if no winner is determined within the window. The market description sets the scheduled start at 7:00AM ET and says a delay beyond seven days without a result forces a neutral outcome, so any admin update, walkover risk, or bracket dependency involving the other lower-bracket fixtures is directly relevant. Dotabuff and other match trackers show the fixture on the day’s slate, but the actual settlement outcome still depends on the organiser’s official result rather than preview listings. [4][8]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares Dota 2: Execration vs Grind Back (BO3) - The International Southeast Asia Closed Qualifier Playoffs specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. Live odds come from the Polymarket order book; the other venues' contract details are maintained manually because their APIs aren't directly comparable. Every CTA routes to Kalshi Alternative UK, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Polymarket settles via UMA Optimistic Oracle on Polygon. A proposer posts the outcome with a bond, the two-hour window runs, then the smart contract pays USDC.

Kalshi settles USD through the CFTC-regulated clearinghouse — the cleanest variant, with heavier KYC. Betfair Exchange settles in account currency (GBP/EUR), net of 2-5% commission. Smarkets follows the same model as Betfair with a lower default 2% commission.

FAQ

Where can I trade this market with the lowest fees?

On Kalshi Alternative UK, 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?

Kalshi Alternative UK 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 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.