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

Platform comparison

Market context

Steven Asplund’s heavyweight bout with Guilherme Pat is priced by the crowd as a near-certainty for Asplund, but the comparison with bookmaker and exchange markets shows the gap is not as extreme as a 100% Yes implies. Across a broad sportsbook average, Asplund sits around -305, which is roughly a 75% implied win probability before vig, while Pat is around +253; Polymarket is shown at about 70¢ for Asplund and 31¢ for Pat, and Kalshi is near 70¢ on Asplund as well.[1][6][7] That makes the current crowd price look rich relative to the wider market, especially on platforms that quote decimal-style cents rather than probability percentages, because the same fight can look very different once fees and contract structure are accounted for.[7][8][13]

Historical framing points to a standard UFC favourite-versus-underdog setup rather than a locked outcome. Recent previews from betting sites have repeatedly listed Asplund in the -275 to -300 range and Pat in the +226 to +240 range, which aligns with most market models and leaves room for variance if the market has overcorrected toward the favourite.[2][4][10][11] On a platform-comparison basis, the important distinction is that Polymarket and Kalshi display event shares in cents, while Betfair and Smarkets typically translate to decimal odds with different commission treatment, and all of them can diverge further once KYC access, jurisdictional restrictions and liquidity limits are factored in; in a fight like this, that can matter more than the headline percentage.

Traders should watch official UFC bout status, weigh-in completion, and any late card reshuffle, because a cancellation, postponement beyond the settlement window, or a no contest would resolve the market to 50-50 under the stated rules. The UFC calendar and market pages place the fight on the August 8, 2026 card, with settlement tied to the official result rather than analyst opinion, so any late injury or commission issue is the main catalyst for repricing.[1][8][13] As of the latest published prices, there is no strong public sign of a disruption, so the main live variable is whether the market converges back towards the broader 70% to 75% Asplund range or keeps pricing an even firmer favourite.[1][6][7]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares UFC Fight Night: Steven Asplund vs. Guilherme Pat (Heavyweight, 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

Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). On-chain settlement clears in minutes — the fastest payout path of the four.

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 about Smarkets as an alternative?

Smarkets is a UK betting exchange with a lower default commission (2%) than Betfair. Liquidity on political markets is below Polymarket, comparable to Kalshi. Geo-blocked in many jurisdictions.

Which platform is accessible globally?

Polymarket is geo-blocked in the US/UK/EU. Kalshi is US-only. Betfair and Smarkets are UK-restricted. Robinhood Prediction Markets has a different geo footprint and routes to Polymarket's order book at 0% fees.

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.