Counter-Strike: Grêmio Esports vs ALKA (BO3) - CCT South America Series 4 Group Stage

Platform comparison

Market context

Grêmio Esports and ALKA faced off in a Best-of-3 Counter-Strike match at the CCT South America Series 4 Group Stage on 19 July 2026, with ALKA securing a 2–1 victory. The prediction market in question, however, shows a 100% YES implied probability favouring Grêmio, creating a stark divergence from live bookmaker lines that priced ALKA as the clear favourite. Major sportsbooks listed ALKA at odds between 1.36 and 1.48, translating to win probabilities of 65–73%, while Grêmio’s odds ranged from 2.48 to 2.90, implying only 33–35% chance of victory [1][5].

Historically, such a 100% market probability against established bookmaker consensus signals either a settlement error, a delayed resolution post-match, or a mismatch between the market’s definition and the actual event outcome. In comparable esports contracts, markets that lock at 100% before or after a completed match often fail to adjust when the result contradicts the implied outcome, leading to automatic 50–50 settlements if the match is deemed incomplete or disputed under the contract’s terms. Here, the match was completed with ALKA winning, yet the market remains fixed on Grêmio, suggesting a potential failure to update based on the official result [3].

Traders should monitor the official CCT South America tournament page and CS2 match databases for any post-match rulings, disqualifications, or administrative corrections that might override the 2–1 scoreline. Recent coverage confirms ALKA’s win with live stats and final scores, reinforcing the discrepancy between the market’s stance and verified results [2][3]. Until the settlement window closes on 19 July 2026 at 19:00 UTC, the 100% probability remains an outlier against all external data, warranting caution on any side aligned with the market’s current framing.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Counter-Strike: Grêmio Esports vs ALKA (BO3) - CCT South America Series 4 Group Stage across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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.

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.

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 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.