UFC Fight Night: Yuneisy Duben vs. Jeisla Chaves (Women's Flyweight, Prelims)

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Active sub-markets

Market context

Yuneisy Duben, a Cuban flyweight competing in the UFC's preliminary card, faces Jeisla Chaves on 6 June 2026 at UFC Fight Night: Muhammad vs. Bonfim. The conditional token pricing on Polygon currently reflects zero implied probability for a Duben victory, with the entire liquidity pool weighted toward Chaves or a 50-50 resolution. This extreme skew suggests either substantial backing for Chaves among active traders, sparse liquidity in the contract itself, or both—a common pattern in preliminary bouts where fighter recognition and historical data remain thin.

Duben's record and recent form provide limited precedent for calibrating this market. Cuban fighters in the UFC's lower weight classes have historically faced uneven matchmaking and inconsistent promotion, making direct comparables difficult. Chaves, similarly, operates in a division where sample sizes are small and upset potential remains structurally higher than in heavier weight classes. The 0% YES price likely reflects either a sharp consensus on Chaves' technical superiority or simply the absence of confident Duben backers willing to deploy USDC against the prevailing sentiment.

Traders should monitor official UFC weigh-ins and fighter health disclosures in the week preceding the event, as preliminary bouts are prone to late withdrawals or replacements. Any announcement regarding either fighter's conditioning, injury status, or last-minute opponent changes would materially alter the conditional token distribution. The settlement window closes 7 June at 03:59:59 UTC, allowing roughly 24 hours post-fight for official UFC confirmation before resolution locks.

Methodology

This page reviews UFC Fight Night: Yuneisy Duben vs. Jeisla Chaves (Women's Flyweight, Prelims) 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 Polymarket UK — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

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

Where can I trade this market with the lowest fees?

On Polymarket UK, 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.

Is this market available outside the US?

Polymarket 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.

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 UK triggers a quick verification flow that finishes in minutes.