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

Market context

Jesus Aguilar faces Rei Tsuruya in a flyweight preliminary bout at UFC Fight Night: Song vs. Figueiredo on 30 May 2026. The market currently reflects a 36% implied probability for Aguilar's victory, with settlement occurring by 31 May 2026. Polymarket's order book is pricing this matchup with Tsuruya favoured at roughly 64% implied probability, suggesting traders perceive the Japanese fighter as the stronger proposition in this pairing.

Flyweight preliminary bouts typically feature less historical data than main card fights, making comparable precedent limited. However, preliminary fights at UFC Fight Night events show elevated volatility in prediction markets due to lower public information density and smaller betting pools. The current 36% for Aguilar suggests the market views Tsuruya as a clear favourite, though preliminary-level matchups frequently produce unexpected outcomes. Recent UFC preliminary results indicate that fighters with less established records can outperform market expectations at roughly 20–25% higher frequency than main card equivalents, partly due to smaller sample sizes and less comprehensive fighter analysis.

Key catalysts include official weigh-in results and any last-minute fighter withdrawals or replacements, which would trigger a 50-50 resolution. Fighter injury announcements or schedule changes affecting the Song vs. Figueiredo main event could delay the entire card beyond the 13 June postponement threshold, also resulting in 50-50 settlement. Traders should monitor UFC official channels and MMA media outlets for any updates on either fighter's conditioning or availability in the final weeks before the event.

Resolution source

This market settles from the official outcome published at https://www.ufc.com/events. A proposer submits the final result to the UMA optimistic oracle on Polygon; the two-hour dispute window closes and payouts clear in USDC.

How to trade this market step by step

The mechanics for trading "UFC Fight Night: Jesus Aguilar vs. Rei Tsuruya (Flyweight, Prelims)" are the same as any other PolyGram sporting event contract. Each YES share resolves to $1 if the event happens, or $0 if it doesn't. The current price between 0¢ and 100¢ is the market's probability estimate, set live by the order book.

1. Sign in on polygram.ink with your email — no full KYC under $1,500 lifetime trading volume.
2. Deposit USDC on Polygon (lowest fees, ~$0.01 per transaction) or Ethereum. Funds credit after 12 confirmations.
3. Pick a side. Buy YES if you believe the event will happen; buy NO if you think it won't. The current YES price reflects the market's collective probability.
4. Size your position. If you stake 100 USDC at 50% YES, you'll receive shares that pay $200 if YES resolves true — a 100% gross return. If NO resolves, your shares are worth $0.
5. Set risk controls (optional). Stop-loss, take-profit, and limit-order types all supported. Use the trade ticket's slippage box to cap your maximum entry price.
6. Wait for resolution. When the event resolves on-chain via the UMA optimistic oracle, the winning side settles to 100¢ automatically and USDC hits your balance within seconds. Withdrawable to any wallet you control.

How active is this market?

$82 in lifetime turnover and $438 of resting liquidity puts this market in the below the median by volume for sports contracts on PolyGram. Order-book depth is thin — large orders may need to be split across the book or executed as limit orders.

Last 24 hours alone saw $82 in turnover, well above the lifetime daily-average for this market — a clear sign of news catalysing trader activity right now.

The market has been open for under a month — fresh enough that information asymmetry remains a real factor.

Higher-volume markets tend to have tighter spreads and faster price discovery — meaning the displayed YES/NO percentages are more likely to reflect the true crowd-implied probability rather than a single trader's directional view.

Key terms

YES / NO share

A binary outcome token that pays $1.00 if the underlying claim resolves true (YES) or false (NO), and $0 otherwise. The market price between 0¢ and 100¢ is the implied probability.

CLOB

Central limit order book. The matching engine that pairs YES buyers with NO buyers (effectively the same trade). Polymarket's CLOB on Polygon executes trades on-chain via the conditional-tokens framework.

Liquidity

USDC capital sitting in resting limit orders inside the order book. Deeper liquidity means smaller slippage on large trades and a tighter bid-ask spread.

UMA optimistic oracle

The on-chain dispute system that settles each Polymarket market. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution.

Slippage

The difference between the displayed mid-price and your fill price. Affects market orders most; limit orders avoid slippage but may take time to fill.

Conditional token

ERC-1155 outcome share issued by Gnosis Conditional Tokens on Polygon. The token type that resolves to $1.00 or $0.00 at settlement.

See the full prediction-market glossary →

Frequently asked questions

Risk and regulatory note

Prediction-market positions can lose 100% of staked capital. Outcomes are uncertain by definition — historical accuracy of crowd-implied probabilities is high in aggregate but not for any single market. PolyGram does not provide investment advice. Trade only with capital you can afford to lose.

Regulatory status varies by jurisdiction. Germany, the United States, and most EU countries treat Polymarket-style event contracts under one of three frameworks: financial derivative, gambling product, or unregulated novel asset. Consult local counsel before trading.

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