PortlandFire vs. Chicago Sky

Platform comparison

Active sub-markets

Market context

The underlying event is a WNBA matchup on 24 June at 8:00pm ET between the Portland Fire and the Chicago Sky, where the market resolves to the winner of the final score including overtime. Historical precedents for such extreme crowd-implied probabilities (0% YES for Portland) typically arise when one side suffers a catastrophic, season-altering injury while the other maintains relative stability. In this case, the Chicago Sky’s six-game losing streak and 4–12 record stem directly from Rickea Jackson’s mid-May season-ending knee injury, which has shattered their offensive identity and dropped their shooting to 23.3% overall[1]. Conversely, Portland sits at 8–9, having won two of their last three, suggesting the market views the Sky’s collapse as so severe that even a home game cannot offset it, mirroring past cases where a team’s core scorer’s absence rendered them non-competitive regardless of venue[1].

Traders should monitor immediate pre-game announcements regarding Sky’s rotation adjustments and any potential late absences for Portland’s key players, as the market’s 0% valuation hinges entirely on the Sky’s inability to recover their offensive flow without Jackson[1]. While the Sky host the game, their recent 92–63 loss to Connecticut, where they shot just 13.3% from deep, underscores the depth of their offensive crisis[1]. ESPN notes Portland’s recent 24-point performance by Carleton as a positive catalyst, yet the Sky’s four-game home losing streak and 1–7 Eastern Conference record remain critical dependencies for any probability shift[2]. No major roster changes have been officially confirmed beyond Jackson’s injury, meaning the market’s stance reflects the current, unaltered reality of the Sky’s depleted lineup[1].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track PortlandFire vs. Chicago Sky on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Where can I trade this market with the lowest fees?

On Sport Prediction, 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.

Is this market available outside the US?

Sport Prediction 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 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.