UFC Fight Night: Diego Ferreira vs. Billy Quarantillo (Lightweight, Main Card)

Platform comparison

Market context

Diego Ferreira and Billy Quarantillo are due to meet at lightweight on the main card of UFC Fight Night, with the market resolving on the official UFC result rather than on scorecards, media consensus, or betting lines. For programmatic trading, that means the cleanest inputs are the bout listing, any last-minute card reshuffles, and the final UFC announcement after the event, because a cancellation, no contest, draw, or postponement beyond the market’s fallback date would send it to 50-50.

The 100% crowd-implied YES price is best read as a hard assumption that the bout will take place and be formally graded, not as a view on who wins. In comparable UFC markets, traders usually separate *existence risk* from *result risk*: a near-certain event can still be mispriced if the market ignores age, late injury withdrawals, weight-cut issues, or commission rulings. Ferreira’s profile points to submission and control upside, while Quarantillo lands more volume and absorbs more shots, so a binary outcome market is still exposed to finish-versus-decision variance rather than one-sided dominance.[1][3][13]

For a hands-on workflow, the key catalysts are official UFC weigh-ins, bout order confirmation, and any last-minute medical or commission changes, since these directly affect whether the contract can settle on the scheduled fight. Recent previews noted Ferreira entered after back-to-back losses and Quarantillo carried the higher pace metrics, which matters because a programmer would typically model this as a live event dependency: if the bout is scratched, the payout path changes completely; if it proceeds, only the official winner matters.[11][13][14]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

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

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'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.

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.