UFC Fight Night: Alex Perez vs. Sumudaerji (Flyweight, Main Card)

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Active sub-markets

Market context

Alex Perez and Sumudaerji are scheduled to meet at flyweight on the main card of UFC Fight Night: Song vs. Figueiredo on 30 May 2026. The Polymarket contract currently prices both outcomes at 50-50, reflecting genuine uncertainty about how this matchup will unfold. Settlement occurs on USDC via Polygon conditional tokens, with the resolution window closing 31 May at 03:59 UTC—allowing roughly 24 hours after the event for official UFC scorecards and decisions to be recorded.

Perez, a former title challenger with significant UFC experience at 125 pounds, has demonstrated resilience through injury comebacks and competitive losses against top-ranked opposition. Sumudaerji represents a rising prospect with a strong finishing record, though his experience against elite competition remains limited. Historical precedent suggests that when an established veteran faces an ascending prospect at this weight class, marginal advantages often depend on fight-day execution rather than credentials alone. The even split in current pricing reflects this genuine competitive balance.

Traders should monitor official UFC injury reports and weigh-in confirmations in the week preceding 30 May. Any late withdrawals or replacements would trigger the 50-50 resolution clause. Additionally, watch for schedule shifts affecting fighter preparation or travel logistics, particularly given the event's international context. The conditional token structure means positions settle immediately upon official UFC declaration, so confirmation timing from the promotion's official channels will be the critical catalyst determining final payouts.

Methodology

We track UFC Fight Night: Alex Perez vs. Sumudaerji (Flyweight, Main Card) on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

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?

Kalshi UK is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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 it cost to trade on Kalshi UK?

Zero. Kalshi UK routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

Do I need to KYC for this market?

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