UFC Fight Night: Melissa Mullins vs. Bia Mesquita (Women's Bantamweight, Prelims)

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Market context

Bia Mesquita vs Melissa Mullins is a women’s bantamweight prelim on the UFC Fight Night card featuring Kape vs Horiguchi, and the live market is currently pricing a decisive Mesquita win as the base case despite the crowd-implied probability sitting at 0% YES. Official UFC listings place the bout on the prelims, while third-party market screens have Mesquita trading as a strong favourite and Mullins as the outsider, which is consistent with a binary resolution structure where any official UFC win for either fighter settles the contract, and a draw, no contest, cancellation, or postponement beyond the deadline resolves to 50-50.[6][3][1][4]

For historical framing, Mesquita enters with a perfect 7-0 professional record, which is the main reason comparable markets have tended to open heavily one-sided when she is matched against a less-proven opponent.[2][1] In practical terms, a power-user would treat the 0% print as a fragile state rather than a durable signal: on thin-liquidity markets, one-sided odds can persist until the bout is formally locked in, then move quickly on confirmation of walkout, weigh-in completion, or any late injury news. The main programmatic edge is monitoring for event-status changes rather than trying to infer the winner from price alone.[3][8]

The catalysts to watch are simple but time-sensitive: UFC bout-sheet updates, any change to the prelim order, medical or regulatory withdrawals, and whether the fight actually starts on schedule at the Apex. Because the settlement window closes shortly after the scheduled fight time, a delay, card reshuffle, or late cancellation would matter more than pre-fight narrative. Recent market screens and odds pages continue to list the contest as active, so any automated strategy should poll the UFC event page and market status in tandem, and should treat “not started by deadline” and “official result posted” as separate states for conditional orders and bots.[6][7][8][3]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews UFC Fight Night: Melissa Mullins vs. Bia Mesquita (Women's Bantamweight, 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 App UK — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Is this market available outside the US?

Polymarket App 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.

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 Polymarket App UK?

Zero. Polymarket App 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 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 App UK triggers a quick verification flow that finishes in minutes.