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

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Market context

Jesus Aguilar faces Rei Tsuruya in a scheduled flyweight prelim at UFC Fight Night: Song vs Figueiredo in Macau, with the market currently priced near a coin flip at 50% YES. For a programmatic read, that makes the main task less about forecasting a strong edge and more about tracking whether the bout remains intact and who the market is actually treating as the favourite. Latest sportsbook listings shown in search results have Tsuruya around -300 and Aguilar about +246, which is a clear gap versus the crowd-implied market and suggests the underlying fight line is being priced decisively in one direction.

Comparable UFC markets often swing most when a late replacement, weight issue, or card reshuffle changes the opponent quality rather than the name on the marquee. When one side is a short-priced prospect and the other a veteran with a narrower path, conditional orders tend to be most useful around weigh-ins and official bout-sheet updates, because those are the points where “fight goes ahead” risk and price discovery converge. If the bout is held as scheduled, the official UFC result will settle the market on the winner; if it is cancelled, postponed beyond the resolution window, or ruled a no contest, it resolves 50-50.

The main catalysts are therefore operational rather than narrative: official weigh-in results, any injury or illness report, and whether UFC keeps the prelim on the UFC Fight Night schedule in Macau. Sofascore currently lists the fight for 30 May 2026, while UFC-linked betting pages also show it as a three-round flyweight bout, which is useful for automated monitoring because it gives a fixed event date and weight class. Traders using alerts or bots should watch for line movement after weigh-ins and any last-minute card changes, as those are the moments most likely to shift the implied win probability before the settlement window closes.

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Methodology

This page reviews UFC Fight Night: Jesus Aguilar vs. Rei Tsuruya (Flyweight, 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 PolyGram — 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?

PolyGram 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 PolyGram?

Zero. PolyGram 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.

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.