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

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Market context

Andre Fili’s featherweight bout with Vinicius Oliveira is the real-world event behind this market, and a **YES** share pays out if Fili is officially declared the winner, while a **NO** share pays out if Oliveira gets the official decision or stoppage. If the UFC rules it a draw, no contest, or the fight is not scored, cancelled, or pushed back too far, the market resolves to **50-50** rather than either fighter taking the full win condition. The official UFC result is the settlement source, so the final word is the commission/UFC decision, not live betting chatter or highlight clips.[2]

On comparable matchups, a crowd-implied **100% YES** price usually means the market is treating the outcome as functionally settled already, which is rare for a fight market unless there has been an official result or near-certain confirmation. In this case, the UFC’s own post-fight material states that Vinicius Oliveira stopped Fili by TKO at 4:56 of round 2, and other results pages and highlight coverage match that finish.[2][3][7] For a newcomer to prediction markets, that matters because share prices are meant to reflect the probability of the settlement event, not just pre-fight odds or who looked stronger on paper.

The main catalysts to watch are official bout announcements, any commission ruling changes, and UFC confirmation of the result, particularly if there were foul, injury, or scorecard complications. Pre-fight coverage had already framed Oliveira as the clear betting favourite, with DraftKings listing him at -305 and Fili at +245, alongside a three-round featherweight setup and a 2.5-round total, which is useful context but not determinative for settlement.[1] In practice, the market should move most if the UFC amends the result, issues a no contest, or reports an administrative change to the bout outcome.[2]

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

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?

On Prediction Market 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?

Prediction Market 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.

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.

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.