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, faces Jeisla Chaves in a preliminary bout at UFC Fight Night: Muhammad vs. Bonfim on 6 June 2026. The fight will be contested at 125 pounds and forms part of the undercard for a main event headlined by Muhammad's bout against Bonfim. Resolution hinges on official UFC scorecards or stoppage; draws, technical draws, no contests, or cancellations beyond 20 June trigger a 50-50 settlement.

The 0% implied probability reflects limited historical data on both fighters within the UFC's formal record system. Duben's recent record and Chaves's competitive history remain sparse in major MMA databases, which typically constrains market liquidity for preliminary-level women's flyweight contests. Comparable preliminary fights at this weight class have historically shown volatile odds shifts once fighter injury reports or late-notice replacements emerge; the absence of established betting patterns here suggests traders are awaiting official weigh-in confirmations and final fight card announcements before committing capital.

From a regulatory standpoint, this market's accessibility depends on the trader's jurisdiction. Under German GlüStV rules, prediction markets on sporting events face licensing requirements; UK-based traders on polymarket-kyc.co.uk benefit from established frameworks, though CFTC reach into US-domiciled traders remains broad for binary sports contracts. The "no-KYC up to $1,500" threshold applies here: traders can place positions below that limit without full identity verification, though settlement and withdrawal may trigger documentation requirements depending on aggregate exposure and residency status.

Methodology

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

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

Where can I trade this market with the lowest fees?

On Polymarket KYC 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 KYC 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 does it cost to trade on Polymarket KYC UK?

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

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.