Sports

Trade: PortlandFire vs. New York Liberty

50% YES 50% NO

Opened · Settles

Resolution criteria on PolyGram: In the upcoming WNBA game, scheduled for May 25 at 8:00PM ET: If the PortlandFire win, the market will resolve to "PortlandFire". If the New York Liberty win, the market will resolve to "New York Liberty". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50.

PolyGram is an on-chain prediction market where you trade YES or NO outcome shares with real USDC on Polygon. For this market, buy YES if you believe the event will happen, or NO if you think it won't. Your maximum loss is your stake — winning shares pay $1.00 each at resolution. Unlike sportsbooks, there is no house edge: prices are set by supply and demand from other traders and reflect the crowd's real-time probability.

Liquidity
$8
Total Volume
—
24h Volume
—
Open Interest
—
Trade this market on PolyGram →

Market outcomes

PortlandFire vs. New York Liberty 50% YES50% NO

Market context

The Portland Fire and New York Liberty will meet on 25 May at 8:00 PM ET in a regular-season WNBA matchup. The market currently reflects a 50-50 split on Polymarket's order book, indicating genuine uncertainty amongst traders regarding the outcome. Settlement occurs at the conclusion of play on 26 May, with provisions for postponement extending the resolution window and cancellation triggering an even split payout.

Historical WNBA matchups between these franchises provide limited direct precedent for calibrating expectations. The Liberty have established themselves as a competitive Eastern Conference side in recent seasons, whilst Portland operates in the Western Conference with distinct roster compositions and travel dynamics. Win-loss records, head-to-head records where applicable, and recent form trajectories typically anchor probability assessments in comparable sports markets. The even split currently priced suggests traders view both teams as evenly matched on the available information, or that information asymmetries are substantial enough to prevent consensus.

Traders should monitor roster availability announcements in the days preceding the fixture, particularly regarding injury status for key players on either side. Weather conditions affecting travel to the venue and any last-minute schedule adjustments warrant attention. Recent WNBA transaction activity and team momentum—including results from games immediately preceding this fixture—often shift implied probabilities as new information reaches the market. Official league communications regarding venue confirmation or scheduling changes would constitute material developments affecting the resolution pathway.

Wikipedia Context

  • Portland Fire & Rescue
    Portland Fire & Rescue

    Portland Fire and Rescue, also known as the Portland Fire Bureau, and sometimes unofficially as the Portland Fire Department, is the principle fire suppression, prevention, and rescue agency of the City of Portland, Oregon, United States. The department is the largest fire protection and emergency medical services provider in the state of Oregon, responsible

  • Portland, Maine
    Portland, Maine

    Portland is the most populous city in the U.S. state of Maine. Its population was 68,408 at the 2020 census. The Greater Portland metropolitan area has a population of approximately 550,000 people, the most populous metropolitan area in Maine. It is the county seat of Cumberland County. Historically tied to commercial shipping, the marine economy, and light

  • Portland Fire
    Portland Fire

    The Portland Fire are an American professional basketball team based in Portland, Oregon. The team competes in the Women's National Basketball Association (WNBA) as a member of the Western Conference; it began play in May 2026. The team plays its home games at Moda Center. The franchise is the second WNBA team in the city's history, following the original Po

Resolution source

This market settles from the official outcome published at https://www.wnba.com/. 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 "PortlandFire vs. New York Liberty" 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?

$0 in lifetime turnover and $8 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.

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

What is the current probability for "PortlandFire vs. New York Liberty"?

As of today, traders on Polymarket price this outcome at 50%. The number updates continuously as the order book clears. PolyGram mirrors the same live odds with locale-aware formatting and USDC settlement.

How does this market resolve?

Resolution is sourced from https://www.wnba.com/. Settlement is executed by the UMA optimistic oracle on Polygon, with a 2-hour dispute window before payouts clear.

When does this market close?

This prediction market is scheduled to close on 26 May 2026. After the resolving event occurs, settlement typically clears within 24 hours once the UMA optimistic oracle confirms the outcome. All payouts are in USDC on the Polygon network.

How can I trade on "PortlandFire vs. New York Liberty"?

To trade on this prediction market, create a free PolyGram account at polygram.ink, deposit USDC via Polygon, and place a YES or NO order on the outcome you believe in. You can learn more on our how-it-works page. Your maximum loss is limited to your stake — there is no leverage or margin.

What happens when the market resolves?

When the outcome is determined, winning YES shares pay out $1.00 each in USDC, while losing shares pay $0. Settlement is handled by the UMA optimistic oracle on Polygon — a proposer submits the result, a two-hour dispute window opens, and if uncontested, payouts are distributed automatically. You can withdraw your winnings to any Polygon wallet.

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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