Pronóstico: UFC 330: Eric McConico vs. Donte Johnson (Middleweight, Early Prelims)

Platform comparison

Market context

Polymarket has this bout around 26% YES for Eric McConico, so the market is leaning towards Donte Johnson while still allowing for a live upset on the conditional-token contract settled in USDC on Polygon. That sits below the pricing suggested by some fight books, where Donte Johnson has been listed as the clear favourite, and it implies traders are already discounting a McConico win rather than treating the bout as close to 50-50.[3][4][8][13]

For framing, both fighters were already set to meet on the UFC 330 card, and the market should be read like any other on-chain pre-fight binary: price moves on the latest card shape, not on theory about style alone.[3][4][8] McConico’s path to a payout is straightforward, but the contract also has a defined 50-50 outcome if the bout is scored as a draw, ruled no contest, not scored, cancelled, or pushed beyond 29 August 2026, so late schedule changes matter as much as the fight itself.[3][4][8]

Traders should watch the UFC’s official bout status, weigh-in and commission confirmation, plus any last-minute card reshuffles around the Philadelphia event. Recent listings put the fight on the prelims in the early evening local time, alongside a full 11-bout card, so an alteration elsewhere on the card is unlikely to change this market directly, but a cancellation, postponement or official no contest would.[3][4][8]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Polymarket Qué Es, which mirrors the Polymarket order book directly.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

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 Polymarket Qué Es. 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.

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Polymarket Qué Es trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

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.