PortlandFire vs. New York Liberty

Platform comparison

Active sub-markets

Market context

The Portland Fire travel to face the New York Liberty on 25 May at 8:00 PM ET in a regular-season WNBA matchup. The market currently reflects a 100% implied probability for Portland, suggesting either a significant information asymmetry or a technical artefact in pricing.

Historical precedent offers limited guidance for such extreme probabilities in WNBA contests. Regular-season games between established franchises rarely settle at single-outcome certainty unless one team has been formally withdrawn or a cancellation announced. The Liberty finished the 2024 season as Eastern Conference contenders with a 32–20 record, whilst Portland's roster composition heading into 2025 remains subject to off-season roster moves. Comparable pre-game markets on WNBA fixtures typically reflect 55–75% ranges for favoured teams, even when facing weaker opponents. A 100% reading warrants scrutiny of whether the market has absorbed late-breaking roster news or reflects illiquidity rather than genuine predictive consensus.

Traders should monitor official WNBA injury reports through 24 May, particularly regarding key contributors on either roster. Liberty beat reporter reporting from outlets covering the franchise will flag any last-minute absences or coaching adjustments. Venue conditions and travel logistics occasionally surface in pre-game coverage; Portland's cross-country fixture carries standard scheduling considerations. The settlement window closes 26 May at midnight, allowing one full day post-game for official result confirmation. Any postponement would extend the market open, whilst outright cancellation without rescheduling would trigger the 50–50 resolution clause.

Methodology

This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to Sport Prediction, which mirrors the Polymarket order book directly.

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

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 Sport Prediction?

Zero. Sport Prediction 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.