UFC Fight Night: Allan Nascimento vs. Mitch Raposo (Flyweight, Prelims)

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Market context

Allan Nascimento and Mitch Raposo are set to clash in a flyweight prelims bout at UFC Fight Night: Kape vs. Horiguchi tonight in Las Vegas, with the fight originally scheduled for Winnipeg before Raposo’s illness forced a relocation to the UFC Apex. The market currently implies a 0% chance for Nascimento to win, a stark figure that demands scrutiny given his 22–6 record versus Raposo’s 10–3 standing and the significant height advantage Nascimento holds at 5’8” compared to Raposo’s 5’5”[5][8].

Historically, such extreme probabilities in UFC prelims often signal either a severe injury undisclosed to the public or a mismatch so profound that the bookmakers have priced out the underfighter entirely; comparable cases include fights where a fighter withdrew mid-event due to acute illness, leading to immediate market collapses before official No Contest rulings[2][3]. Programmatic traders should treat this 0% as a conditional order trigger, setting bots to monitor for any late UFC announcements that might flip the market to 50–50 if the bout is ruled a No Contest, rather than assuming the outcome is fixed.

Key catalysts include the official fight result announcement expected within hours and any post-fight medical reports from the UFC regarding Raposo’s condition, which could influence future betting lines if he is deemed unfit for competition[2]. Traders using copy-trading bots must watch for real-time updates on the UFC’s official site, as a technical draw or cancellation beyond July 4 would automatically resolve the market to 50–50, creating a high-value arbitrage opportunity for conditional order strategies[3]. Recent confirmation of the fight’s move to June 20 underscores the volatility inherent in illness-driven schedule changes, making live data feeds essential for accurate execution[7].

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 Polymarket Bot 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?

Polymarket Bot 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 does it cost to trade on Polymarket Bot UK?

Zero. Polymarket Bot UK 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.