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

Platform comparison

Market context

Diego Ferreira meets Billy Quarantillo in a lightweight main-card bout at UFC Fight Night, and the current crowd price is effectively treating Ferreira as a near-certain winner. That is a sharper stance than the broader pre-fight market consensus shown by traditional pricing: CBS Sports listed Ferreira around **62%** to Quarantillo’s 38%, while UFC-calendar style listings put Ferreira nearer **64% implied win probability** with Quarantillo about **40%**.[15][7] For a platform comparison, that means Polymarket’s crowd-implied 100% YES is far more absolute than the decimal-odds framing used on Betfair-like books, where the same fight would usually sit as a price above 1.00 and below a certainty, while Kalshi-style markets would present the same view as a straight probability rather than a price.

The historical read on this matchup is that it is a collision between Ferreira’s more balanced finishing profile and Quarantillo’s higher-volume striking and wrestling output. Ferreira’s record is 19-7, with a split of wins by knockout, submission and decision, while Quarantillo is 18-7 and leans more heavily to KO/TKO wins; comparative stat pages show Quarantillo ahead on significant strikes landed per minute, takedown average and submission attempts, while Ferreira has the cleaner overall defensive numbers in several categories.[1][2][3] That kind of style contrast matters because a market this skewed can still be sensitive to late line-up changes, weigh-in issues or a card reshuffle that turns a booked bout into a no contest or postponement, which would send this contract to 50-50 under the rules.

For traders comparing platforms, the main catalysts are confirmation that the bout actually starts, plus any official UFC adjustment to the fight card or result status after the event. UFC and event-calendar listings place the fight on UFC Fight Night: Gamrot vs Salkilld on 8 August 2026, so settlement should track the official UFC ruling rather than media scoring, and any delay beyond the market’s deadline would matter more than in a standard sportsbook line.[4][7] In practical terms, Betfair and Smarkets users may face different access and fee structures depending on jurisdiction and account verification, whereas prediction markets such as Polymarket and Kalshi are more directly tied to a binary resolution; the divergence here is less about who is favoured and more about how each venue expresses certainty, costs and KYC reach.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We read UFC Fight Night: Diego Ferreira vs. Billy Quarantillo (Lightweight, Main Card) from four platform perspectives: Polymarket (on-chain CLOB), Kalshi (CFTC-regulated exchange), Betfair Exchange (sports book exchange), Smarkets (peer-to-peer betting exchange). Polymarket's live mid is the canonical probability; the side-by-side columns benchmark fees, KYC, settlement currency and deposit rails so you can choose the venue that fits your jurisdiction and trade size.

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.

UK Frequently Asked Questions

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.

Which platform has the deepest liquidity?

Polymarket — by a wide margin. Top markets reach $50-500M volume, Kalshi ~$200M cumulative, Betfair similar. Deeper liquidity means your trade moves the quote less.

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.

Polymarket vs Betfair Exchange: which is better for UK prediction trading?

Betfair Exchange offers UKGC regulation, GBP settlement, and potentially tax-free winnings — but focuses on sports and politics only. Polymarket has deeper liquidity, 0% platform fee, global event coverage, and crypto/geopolitical markets Betfair doesn't offer. For UK traders: Betfair for regulated GBP sports markets; Polymarket for broader, global prediction events.

Is Kalshi available in the UK?

Kalshi is a US CFTC-regulated prediction exchange. UK residents can create accounts but must use USD and US payment methods. Kalshi's product range overlaps with Polymarket but with lower liquidity on most contracts. For UK traders, Polymarket typically offers better prices due to higher global volume.