UFC Fight Night: Song Yadong vs. Deiveson Figueiredo (Bantamweight, Main Card)

Platform comparison

Active sub-markets

Market context

Song Yadong and Deiveson Figueiredo are scheduled to meet in a bantamweight bout at UFC Fight Night on 30 May 2026. The 0% YES price on Polymarket's conditional token for Song victory reflects either minimal trading activity or a technical pricing anomaly on Polygon, as both fighters carry legitimate win probabilities. Song, a Chinese striker ranked in the bantamweight top 15, brings consistent striking volume and footwork advantages. Figueiredo, the former flyweight champion, moves up in weight class following his recent UFC tenure, introducing uncertainty about his adaptation to the heavier division.

Historical precedent matters here: when established flyweight champions shift upwards, results split roughly evenly between those who capitalise on superior technical foundation and those who struggle with increased power and reach. Figueiredo's championship pedigree at 125 pounds provides credibility, yet Song's recent form and home-region advantage (the event location remains unconfirmed but Song's profile suggests Asian promotion potential) typically merit 45–55% implied probability ranges in comparable matchups. The current zero-probability reading on YES contracts suggests either liquidity constraints on Polygon or early-stage market formation before serious capital enters.

Traders should monitor UFC official announcements regarding venue confirmation, fighter injury reports, and any weight-class adjustments through to the 13 June cancellation threshold. Recent UFC scheduling patterns show Fight Night events occasionally shift dates or fighter pairings within 2–3 weeks of the card. Settlement occurs 2026-05-31 at 03:59:59 UTC, allowing roughly 24 hours post-fight for official UFC scorecards and adjudication before conditional token resolution on-chain.

Methodology

This page reviews UFC Fight Night: Song Yadong vs. Deiveson Figueiredo (Bantamweight, Main Card) across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at Kalshi UK — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

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

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.