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

Platform comparison

Market context

Polymarket is pricing Steven Asplund to beat Guilherme Pat at about **87%** today, which leaves the **Guilherme Pat** side around **13%** on the exchange. Because the contract settles in **USDC on Polygon** through conditional tokens, the key question for holders is not the bout narrative but the official UFC result that lands before the market’s deadline.

That price sits above most outside reference points. Sportsbook and model-led comparisons in the build-up generally had Asplund favoured in the low-to-mid 70s, with Polymarket itself shown around 69%–73% elsewhere and one UFC odds tracker listing a roughly 75% implied win rate from a -305 line.[1][2][8][9][18] Put differently, the crowd has been giving Asplund a stronger chance than the wider betting market, but not by a huge margin; that usually means the contract is leaning on favourite pricing rather than expecting a blowout. Recent preview pieces also framed the fight as a lower-total, finish-prone heavyweight matchup, which matters because heavyweight volatility can make single-fight probabilities move sharply on late information.[4][13][14]

The main catalysts are straightforward: official weigh-in and bout-order confirmation, any late replacement news, and the UFC’s final result posting after the fight. The market’s resolution language also matters, because a draw, no contest, cancellation, or postponement beyond **22 August 2026** sends it to **50-50** rather than either fighter. As the settlement source is the UFC itself, traders are effectively watching for the sanctioned winner, not social-media reporting or sportsbook grading.[6][8][10]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

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

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 Polymarket Scam?. 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.

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%.