UFC Fight Night: Steven Asplund vs. Guilherme Pat (Heavyweight, Main Card)

Platform comparison

Market context

Steven Asplund’s heavyweight meeting with Guilherme Pat is priced as a clear favourite-versus-underdog fight, but the market split is not uniform. Sportsbooks cluster around Asplund in the low-to-mid -300 range, which translates to roughly a 70-75% win chance after vig removal, while the live prediction-market read is a little lower, with Kalshi around 72-73% and Polymarket about 70% for Asplund versus roughly 27-30% for Pat.[1][4][14] That leaves the current crowd-implied 100% YES on Asplund well above both bookmaker and exchange pricing, so the contract is trading as if the favourite is essentially a lock rather than merely a strong favourite.[1][7][14]

Comparable UFC moneylines suggest caution with that degree of certainty: heavy favourites in MMA still lose often enough that a 70% price is not unusual, especially in a division as volatile as heavyweight, where one clean exchange can overturn the pre-fight edge. Recent analyst picks are mostly aligned with the favourite, but not to the extent implied by a 100% contract; one betting preview made Asplund the pick at around -282, while another model split the bout closer to 57/43, which is materially less emphatic than the crowd price.[2][5][12] In other words, the market consensus supports Asplund, but the current YES price leaves little room for the uncertainty that usually remains in UFC bouts.

Traders should watch official UFC bout status, weigh-in and medical updates, and any late card reshuffles before the settlement window closes. The market resolves only on UFC’s official result, and it also has a 50-50 fallback if the fight is cancelled, postponed beyond 22 August 2026, or ends as a no contest or non-result.[1] Because the event is scheduled for 8 August, the main catalysts are late-week booking confirmation, any change to the main-card placement, and whether either fighter’s availability is affected by injury, weight issues, or short-notice replacement dynamics.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to PolyGram, which mirrors the Polymarket order book directly.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

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.