UFC Fight Night: Jesus Aguilar vs. Rei Tsuruya (Flyweight, Prelims)

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Market context

Jesus Aguilar meets Rei Tsuruya in a three-round flyweight prelim at UFC Fight Night: Song vs. Figueiredo in Macau, with the winner set by the UFC’s official result. The market is priced almost exactly at 50%, which matches a fairly even binary between Aguilar’s experience and Tsuruya’s youth and grappling upside. In early betting, several sportsbooks have Tsuruya as a clear favourite, with BetUS posting Tsuruya around -300 and Aguilar about +246, a gap that implies the crowd has not fully repriced the matchup into a one-sided view.

Comparable UFC markets with a strong favourite but not overwhelming consensus often turn on whether the underdog can force enough wrestling exchanges to avoid a clean striking read. Tsuruya has been described in preview material as a busy orthodox flyweight expected to push a high pace and lean on takedowns and top control, while Aguilar’s most obvious path is to create chaos and look for submission chances. That profile matters for settlement because a three-round fight can sit close on the scorecards even when one side spends long spells in control, and that is the sort of setup where a 50% market can stay tight until the official decision is posted.

For traders, the key catalysts are final weigh-in results, any late injury or bout-order changes, and whether the prelim remains locked in place on the UFC’s Macau card. The settlement here is based on the UFC’s official declaration, so scorecard disputes, unofficial media scorecards, or market sentiment on social channels do not matter unless they feed into a genuine late schedule change. In crypto terms, the outcome should settle cleanly in USDC once the result is posted, while broader BTC and ETH moves are unlikely to alter the contract unless they trigger a wider risk-off swing in market liquidity or deposit flows.

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Methodology

This page reads UFC Fight Night: Jesus Aguilar vs. Rei Tsuruya (Flyweight, Prelims) on-chain. Polymarket's quote comes directly from the Polygon order book — the only comparable venue with on-chain settlement. Kalshi (USD, off-chain), Betfair (GBP/EUR, off-chain) and Manifold (play-money) are listed for comparison. Every CTA routes to PolyGram, which mirrors the Polymarket order book directly.

Resolution & payout

Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.

Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.

FAQ

Where can I trade this market with the lowest fees?

On PolyGram, 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.

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.

Do I need to KYC for this market?

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

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.