AC Goianiense vs. Fortaleza EC

Platform comparison

Market context

AC Goianiense faces Fortaleza EC in a Brazil Serie B match at Estádio Antônio Accioly on Sunday, 12 July 2026, with the Polymarket contract pricing the outcome at a 100% YES probability today. This absolute pricing reflects the on-chain mechanics of conditional tokens settled in USDC on Polygon, where the market has already resolved as the game concluded yesterday.

Historically, 100% probabilities in sports prediction markets signal post-event certainty rather than pre-match forecasting, as seen when similar Brasileirão contracts locked in immediately after final scores were confirmed. In prior Serie B cases, such as Fortaleza’s 2–1 victory over Atlético GO in their last meeting, markets moved decisively once the 90-minute result was official, excluding extra time or penalties [6]. The current pricing aligns with this pattern, indicating the event has already settled.

Traders should monitor official league confirmations and match reports for any settlement disputes, though no such issues are expected given the clear result. Recent coverage on ESPN confirms the live score and final stats for this fixture, reinforcing the settled status [3]. With the settlement window ending 21:00 UTC on 12 July, the contract’s 100% YES reflects the completed nature of the match rather than an active prediction.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track AC Goianiense vs. Fortaleza EC 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

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 Kalshi UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.