UFC Fight Night: Allan Nascimento vs. Mitch Raposo (Flyweight, Prelims)

Platform comparison

Active sub-markets

Market context

Allan Nascimento versus Mitch Raposo is a flyweight prelim on UFC Fight Night: Kape vs Horiguchi, and the market is effectively asking whether the UFC’s official result will come back as a clean Nascimento win, a Raposo win, or a no-result type outcome if the bout is altered before settlement. UFC.com has already described the matchup as scheduled for 20 June 2026 after Raposo’s earlier illness-related reshuffle, which makes the fight itself the main dependency rather than any title or ranking consequence.[6][7]

The current **0% YES** crowd-implied price on Polymarket is materially different from how this matchup is often viewed on betting-style books. On Polymarket, the quote is an implied probability; on Kalshi it would typically be expressed as a contract price, while Betfair and Smarkets would present decimal odds with exchange commission rather than a simple binary probability. That matters here because a near-zero crowd price can still coexist with small exchange interest if traders expect either a late cancellation, weight miss, or a style-based upset. Tapology and Sofascore both have the bout listed as a three-round prelim, which is the relevant comparable case for reading settlement risk rather than championship volatility.[2][3]

For catalysts, the key watchpoints are final UFC bout confirmation, weigh-in completion, and any late medical or scheduling change, especially because the fight was already moved once from another card.[6] Recent preview coverage has framed Raposo as needing a standing-heavy fight to improve his path to victory, which underlines why market sentiment may skew towards Nascimento if the bout proceeds normally.[4] The official UFC result will control settlement, so any injury, cancellation, or no-contest scenario before the window closes would matter more than pre-fight media noise.[6][7]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares UFC Fight Night: Allan Nascimento vs. Mitch Raposo (Flyweight, Prelims) specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. Live odds come from the Polymarket order book; the other venues' contract details are maintained manually because their APIs aren't directly comparable. Every CTA routes to Polymarket Alternative, 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). Polymarket Alternative routes every trade directly into Polymarket's on-chain settlement, which is why payouts land fastest.

FAQ

Where can I trade this market with the lowest fees?

On Polymarket Alternative, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

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.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket Alternative triggers a quick verification flow that finishes in 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.