UFC Fight Night: Miles Johns vs. Jessie Rosas (Featherweight, Main Card)

Platform comparison

Market context

Miles Johns vs Jessie Rosas is scheduled for UFC Fight Night on 8 August, and the market will settle on the official UFC result only, so a programme that tracks it should treat any late card change, bout cancellation or no contest as a separate state rather than a simple win/loss. Current crowd pricing at 51% YES sits close to a coin-flip, which is consistent with a relatively efficient market when the edge between a veteran with UFC experience and an opponent making a step-up is narrow.[1][3][15]

Comparable framing points to Johns as the more established profile: UFC records list him at 15-5-0 with one no contest, while Rosas is listed at 8-1-0 and has no UFC record yet on UFC Stats.[6][11] Third-party models and odds are not aligned on the size of the gap, with one model showing Johns around 65% and another market listing him near 57%, which suggests traders are pricing experience, defence and pace differently rather than agreeing on a strong favourite.[3][15][18] For bot users, that means the market is best approached as a live dependency tree: confirm the bout stays on the main card, then watch for weigh-in, medical and scheduling updates that could force a 50-50 resolution path.

The practical catalysts are simple but important. Official UFC event listings and stats pages are the cleanest settlement inputs, while sportsbook and market feeds can shift first on rumours of a reshuffle, injury or replacement opponent.[11][13][20] If your tooling supports conditional orders or copy-trading, the key trigger is not just fighter news but whether the fight remains scheduled for 8 August and is still judged by the UFC; if it slips beyond the market’s cut-off on 22 August, the contract resolves 50-50 rather than to either fighter.[1]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Polymarket Bot UK, which mirrors the Polymarket order book directly.

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.

UK Frequently Asked Questions

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