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-born flyweight, faces Jeisla Chaves in a preliminary bout at UFC Fight Night: Muhammad vs. Bonfim on 6 June 2026. The market currently reflects zero probability for Duben's victory, suggesting either minimal trading activity or strong consensus backing Chaves. Settlement depends on official UFC declaration of a winner; any draw, technical draw, no contest ruling, or cancellation beyond 20 June triggers a 50-50 resolution.

Duben's record and recent form remain the primary interpretive lens for assessing the 0% probability. Preliminary fights in the women's flyweight division typically attract limited pre-fight analysis compared to main card bouts, and odds often reflect incomplete information rather than settled expert consensus. Historical precedent shows that preliminary fights frequently produce upsets, particularly when one fighter enters with less established credentials or recent momentum. The absence of substantial market activity—reflected in the extreme probability—suggests traders may be waiting for official weigh-in confirmations or late injury withdrawals before committing capital.

Key catalysts include official fighter weigh-ins scheduled immediately before the event, which could trigger last-minute changes if either competitor misses weight or sustains injury. UFC Fight Night events occasionally feature fighter substitutions or cancellations announced within 48 hours of competition. Traders should monitor UFC's official announcements and fighter social media for any indication of training camp issues, weight-cutting complications, or schedule changes. The settlement window closes at 03:59:59 UTC on 7 June, allowing minimal time for post-fight resolution disputes.

Methodology

This page tracks UFC Fight Night: Yuneisy Duben vs. Jeisla Chaves (Women's Flyweight, Prelims) across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. Trump Prediction routes every trade through to Polymarket — at 0% fees.

Resolution & payout

Political markets typically settle on official candidate or agency confirmation. Polymarket uses UMA Optimistic Oracle: a proposer posts the outcome with a bond, the two-hour window opens, then the smart contract pays USDC.

Kalshi settles USD via CFTC clearinghouse, with clearly defined resolution sources (e.g. AP race calls for elections). Betfair settles after the official outcome is registered with the league or agency. Manifold is play-money.

FAQ

Where can I trade this market with the lowest fees?

On Trump Prediction, 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?

Trump Prediction 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.

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.