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

Platform comparison

Active sub-markets

Market context

Andre Fili faces Vinicius Oliveira in a featherweight main-card bout at UFC Fight Night, with the market set to pay out in USDC according to the official UFC result once the fight is scored. The current 100% YES price implies the crowd is treating Fili as the near-certain winner, but that is at odds with pre-fight betting and preview coverage that made Oliveira the clear favourite, listed at about -300 versus Fili at +240. [1][2]

That contrast matters because UFC markets often move sharply on late fight-week information, especially when a bout is booked or rebooked on short notice, or when a fighter is stepping up in weight. Preview coverage described Oliveira as the knockout-minded favourite and Fili as a veteran opponent, which is the same basic framing traders use to judge whether the contract price reflects expected form or a stale position. [2][8] Comparable market setups also resolve strictly on the official winner, so a technical draw, no contest, cancellation or postponement beyond the settlement window would flip the contract to 50-50 rather than a side. [3]

For traders, the key catalysts are the UFC’s bout confirmation, weigh-in status, and any late medical or commission changes that could alter the matchup before the settlement deadline. The contract settles only on the official UFC outcome, so in-play swings, judge scorecards and any post-fight overturns matter more than pre-fight chatter. If broader crypto conditions become relevant, USDC settlement removes direct token-volatility risk, though BTC and ETH price moves can still affect overall market sentiment and on-chain liquidity around prediction markets.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically this overview focuses on on-chain pricing: Polymarket's live mid comes from the Polygon conditional-token order book and settles automatically in USDC. The other three venues — Kalshi, Betfair, Manifold — are listed with their platform attributes, because they operate off-chain and a 1:1 comparison of contract mechanics isn't possible.

Resolution & payout

Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.

Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.

FAQ

Is this market available outside the US?

BTC Prediction 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.

What does it cost to trade on BTC Prediction?

Zero. BTC Prediction routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

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.