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

Platform comparison

Market context

Diego Ferreira’s lightweight fight with Billy Quarantillo sits at an awkward intersection of styles: Ferreira is the more submission-driven finisher, while Quarantillo brings higher volume and more frequent takedown attempts. Recent pre-fight stat sets put Quarantillo ahead on significant strikes landed per minute and takedown volume, while Ferreira has the cleaner submission profile and a modest reach edge, which helps explain why external books have not treated this as a one-sided matchup despite the market’s 100% YES reading on Ferreira.[2][3][18]

For comparables, Ferreira has been priced around -175 to -180, which translates to roughly 64% to 62% implied win probability on standard American-odds conversion, while Quarantillo has been shown at +140 to +150, or about 40% to 38% implied.[6][14] That is the main platform-comparison point: Polymarket-style markets show a simple yes/no share price, while Kalshi uses contract pricing and Betfair or Smarkets present decimal prices that embed commission differently, so the same fight can look cleaner or cheaper depending on whether fees are taken out of the displayed price or added later. KYC also matters: regulated exchanges typically require identity checks and have wider formal access limits than crypto-native platforms, so liquidity and user eligibility can diverge even when the underlying view is the same.

The key catalyst is official UFC confirmation of the result, because this market resolves only from UFC information and the fight must have been officially scored before the settlement window closes.[4] If the bout were moved, ruled a no contest, or not completed by the deadline, the market would not pay Ferreira by default; instead it would fall to the market’s 50-50 fallback language.[4] A recent fight preview had Ferreira listed at about -175 and Quarantillo at +140, underscoring that pre-fight pricing was competitive rather than dominant, so any late injury, weigh-in issue, or card reshuffle would be the main reason to watch the book rather than the hype cycle around the matchup itself.[13]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares UFC Fight Night: Diego Ferreira vs. Billy Quarantillo (Lightweight, Main Card) specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. The live probability is the Polymarket mid; the comparison columns summarise each venue's fee structure, KYC, settlement currency and payment rails. Every CTA routes to Robinhood Prediction Markets, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Polymarket settles via UMA Optimistic Oracle on Polygon. A proposer posts the outcome with a bond, the two-hour window runs, then the smart contract pays USDC.

Kalshi settles USD through the CFTC-regulated clearinghouse — the cleanest variant, with heavier KYC. Betfair Exchange settles in account currency (GBP/EUR), net of 2-5% commission. Smarkets follows the same model as Betfair with a lower default 2% commission.

FAQ

Polymarket vs Kalshi — which is better?

Depends on your location. Kalshi is CFTC-regulated, US-only with full KYC. Polymarket is global, on-chain, no KYC up to $1,500. Polymarket has ~10x higher liquidity but higher regulatory risk.

What does Polymarket cost vs Kalshi?

Polymarket: 0% fees, only Polygon network costs (~$0.01/trade). Kalshi: up to 7% per trade plus spread. For high-frequency traders, Polymarket is dramatically cheaper.

Is Betfair a Polymarket alternative?

Only partially. Betfair Exchange is UK-focused with a sports-betting emphasis; they have politics markets but with thinner liquidity than Polymarket. Settlement in GBP/EUR, 2-5% commission on winnings.

Are all these platforms regulated?

No. Kalshi is CFTC-regulated (US). Betfair and Smarkets are UK Gambling Commission licensed. Polymarket operates without explicit regulation — a different risk profile than a regulated sportsbook.

Which platform supports Klarna/SOFORT?

Directly: none. Polymarket accepts only USDC on Polygon. Robinhood Prediction Markets offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.