UFC Fight Night: Bruno Silva vs. Édgar Cháirez (Flyweight, Prelims)

Platform comparison

Active sub-markets

Market context

Bruno Silva, a Brazilian flyweight, faces Édgar Cháirez on the preliminary card of UFC Fight Night: Muhammad vs. Bonfim on 6 June 2026. The bout is scheduled for the 125-pound division and will be contested over three five-minute rounds. Official confirmation of the winner will come directly from UFC records, with the settlement window closing shortly after the event concludes.

Silva's record and recent form provide the baseline for assessing this matchup. Cháirez, a Mexican flyweight, brings his own competitive history to the division. Comparable preliminary-card matchups at UFC Fight Night events historically show wide variance in outcome predictability; upsets occur at roughly 30–40% frequency in lower-profile bouts where fighter availability and camp preparation can fluctuate more than in main-card contests. The current 0% implied probability across prediction platforms suggests either extremely limited liquidity or a consensus view that one fighter carries overwhelming edge—a pattern worth cross-referencing against Kalshi's decimal odds format versus Polymarket's percentage display, as different platforms sometimes reveal divergent assessments through their fee structures and market depth.

Traders should monitor official UFC announcements regarding fighter health, weight-cut complications, or last-minute roster changes through early June. The preliminary-card status means this bout could face cancellation or rescheduling if either fighter withdraws, triggering the 50-50 resolution clause. Smarkets and Betfair's commission models may price this tail risk differently than fixed-fee platforms, creating arbitrage opportunities if injury reports surface closer to fight week.

Methodology

This page compares UFC Fight Night: Bruno Silva vs. Édgar Cháirez (Flyweight, Prelims) specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. Live odds come from the Polymarket order book; the other venues' contract details are maintained manually because their APIs aren't directly comparable. Every CTA routes to Kalshi Alternative UK, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Polymarket settles via UMA Optimistic Oracle on Polygon. A proposer posts the outcome with a bond, the two-hour window runs, then the smart contract pays USDC.

Kalshi settles USD through the CFTC-regulated clearinghouse — the cleanest variant, with heavier KYC. Betfair Exchange settles in account currency (GBP/EUR), net of 2-5% commission. Smarkets follows the same model as Betfair with a lower default 2% commission.

FAQ

Is this market available outside the US?

Kalshi Alternative 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'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 Kalshi Alternative UK?

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

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Kalshi Alternative UK triggers a quick verification flow that finishes in minutes.