UFC Fight Night: Diego Ferreira vs. Billy Quarantillo (Lightweight, Main Card)

Platform comparison

Market context

Diego Ferreira versus Billy Quarantillo is live on the UFC card, and the market is already fully priced at **100% YES** for Ferreira, which means traders are effectively treating the bout as a done deal rather than a live coin flip. That fits a late-stage fight-night setup: with the settlement window closing shortly after the scheduled bout time, the only real risk now is a cancellation, postponement, or an official result that does not produce a standard winner.

The recent form and style matchup help explain why the market has crowded so hard towards Ferreira. Ferreira is 19-7 and Quarantillo 18-7, but the striking volume numbers favour Quarantillo, while Ferreira’s edge comes more from submissions and opportunistic finishing. Recent previews also note Ferreira has dropped his last two fights and is 2-3 in his past five, so the current price is not a form-only read; it reflects confidence that his grappling threats and experience can still decide a three-round lightweight bout. Comparable cases at this level often move sharply on weigh-in day and again once walkout order is confirmed, because both factors can influence whether the market leans towards a favourite getting the fight to the mat or a higher-output opponent building rounds.

The main catalysts to watch are the UFC’s official bout status, any late medical or weight-related changes, and the final result announcement after the fight. The bout is listed for UFC Fight Night: Gamrot vs Salkilld on 8 August 2026, with official UFC records showing Ferreira at 19-7-0 and Quarantillo at 18-7-0, so the market will settle only on an official UFC declaration of the winner or a non-result outcome. If the fight is moved, ruled no contest, or not scored for any reason before the deadline, the market flips to **50-50**, which is the key dependency traders should keep in view.

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Methodology

This page reviews UFC Fight Night: Diego Ferreira vs. Billy Quarantillo (Lightweight, Main Card) across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Prediction Today, which mirrors the Polymarket order book at 0% fees.

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.

UK Frequently Asked Questions

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

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.

Is Polymarket legal in the UK?

Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.

Do I pay tax on prediction market profits in the UK?

UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.

How do I deposit on Polymarket from the UK?

UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.