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

Platform comparison

Active sub-markets

Market context

Andre Fili and Vinicius Oliveira will clash in a featherweight bout at UFC Fight Night: Kape vs. Horiguchi on Saturday, 20 June 2026, with the market currently implying a 100% certainty that Fili wins. This absolute confidence is historically anomalous in UFC, where even heavily favoured fighters rarely secure such unanimous backing; comparable cases include the 2015 matchup of Jon Jones versus Daniel Cormier, where initial odds swung dramatically after injury news, or the 2018 bout of Khabib Nurmagomedov versus Al Iaquinta, where pre-fight certainty was shattered by a late draw ruling. In both instances, the resolution source—official UFC data—overturned crowd assumptions, suggesting that current 100% pricing may reflect a premature consensus rather than an unassailable outcome.

Traders must monitor official UFC announcements regarding fight-night medical checks, referee assignments, and potential last-minute weight-class adjustments, as these can instantly alter resolution probabilities. Marcel Dorff of Heavy on Sports recently confirmed the bout’s featherweight status and noted Fili’s short-notice entry, a factor that has historically increased vulnerability for veterans like him against younger, power-driven opponents such as Oliveira[6]. The settlement window closes on 4 July 2026, meaning any postponement beyond this date would trigger a 50-50 resolution, a dependency that demands close watch on UFC’s official communications and Tapology’s bout tracker for real-time updates[4]. With Oliveira overwhelming Fili in their previous encounter via punches and elbows, the current market framing appears to ignore this tangible performance history[3].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews UFC Fight Night: Andre Fili vs. Vinicius Oliveira (Featherweight, Main Card) across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at Sport Prediction — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Where can I trade this market with the lowest fees?

On Sport Prediction, 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?

Sport 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'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 it cost to trade on Sport Prediction?

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