UFC Fight Night: Mateusz Gamrot vs. Quillan Salkilld (Lightweight, Main Card)

Platform comparison

Market context

Mateusz Gamrot meets Quillan Salkilld in a lightweight main-card fight at UFC Fight Night, and the market is pricing Gamrot at 42% to win, which is notably below a coin-flip. For a programmatic workflow, that means the live price is implying a meaningful upset chance rather than a routine favourite read, so any bot or conditional-order setup should treat late line movement as a signal that the market is still resolving disagreement about style match-up and finish pathways. ESPN’s fight centre lists the bout and Gamrot’s 26-4 record, while multiple preview models frame the contest as a clash between Gamrot’s grappling volume and Salkilld’s finishing upside[3][4][6][10].

Comparable pre-fight analysis has split on whether Gamrot’s control game or Salkilld’s pace and power matter more. One model gives Gamrot the edge by decision and notes his tendency to extend fights, while another finds Salkilld ahead on an Elo-style read and flags his higher finish rate, which is exactly the sort of mixed signal that tends to keep a fight market’s implied probability in the low-to-mid 40s until weigh-ins and any late card reshuffles are confirmed[4][10]. For traders reading this mechanically, the practical angle is that a 42% quote sits in the zone where model disagreement is usually more important than raw record differential.

The main catalysts are straightforward: official bout confirmation, weigh-in clearance, cage-side order on the night, and any late injury or card change that could affect whether the fight is completed before the settlement deadline on 9 August 2026 at 03:59:59.999 UTC. The UFC’s official result is the resolution source, so a bot should key off the post-fight declaration rather than media scorecards, with draw, no contest, cancellation, or postponement beyond 22 August 2026 all resolving to 50-50 under the market rules[3].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track UFC Fight Night: Mateusz Gamrot vs. Quillan Salkilld (Lightweight, Main Card) across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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

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.

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 Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Kalshi Fees trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.