UFC Fight Night: Andre Fili vs. Vinicius Oliveira (Featherweight, Main Card)

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Market context

Polymarket has this featherweight main-card contract priced at **100% YES**, so the screen is effectively treating Andre Fili as the only outcome the market is willing to pay for. On Polymarket, that means traders are buying conditional tokens settled in **USDC on Polygon**, with resolution tied to the UFC’s official result rather than to commentary, scorecards in isolation, or outside reporting.

The current price sits against a fairly lopsided pre-fight backdrop. Vinicius Oliveira was listed as the betting favourite in recent market coverage, with some books posting him around **-300** and Fili near **+240**; preview pieces also framed Oliveira as the more dangerous finisher, while Fili was described as a veteran short-notice type with more experience than upside in the matchup.[1][2] Comparable UFC fight markets often move hard once the official bout sheet is confirmed and the weigh-ins, line-ups, and medical clearances are complete, but the key here is that a 100% reading leaves almost no room for late re-pricing unless the market is already locked on an outcome that has been externally validated.

For traders, the main catalysts are straightforward: the UFC’s official bout status, the walkout order, and the final verdict once the cage door closes. The market only resolves to **Andre Fili** if he is officially declared the winner by the UFC; if Oliveira wins, it resolves the other way, and any draw, no contest, cancellation, or postponement beyond the stated window pushes it to **50-50**.[3][4] Fight listing pages currently place the bout on the UFC Fight Night card in Las Vegas, but conditional-token markets can still be sensitive to last-minute scrapes, scorecard disputes, or a schedule shift before the settlement deadline.[4][6]

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). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

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?

On Kalshi 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 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.

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.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Kalshi UK triggers a quick verification flow that finishes in 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.