PortlandFire vs. Chicago Sky

Platform comparison

Active sub-markets

Market context

The underlying real-world event is the WNBA match between the Portland Fire and the Chicago Sky, played on Friday, 26 June 2026 at 7:30 PM ET at Wintrust Arena in Chicago. The market resolves based on the final winner, with the current crowd-implied probability of a Portland Fire victory sitting at 0%, reflecting the decisive 124–94 result already recorded in that fixture[5].

Historical precedents for such extreme probability shifts in sports prediction markets often follow a pattern where a single dominant performance, such as Kamilla Cardoso’s career-high 30 points without a miss, renders the opposing team’s win chance effectively nil before the game concludes[5]. Comparable cases in recent WNBA seasons show that when a team secures a 30-point margin, markets rarely recover to imply a competitive outcome, validating the 0% figure as a factual reflection of the settled result rather than a speculative estimate.

Traders should monitor official WNBA announcements regarding any potential postponements or cancellations, as these would alter the market’s resolution path to a 50–50 split if no make-up game occurs, though the game has already been completed[1]. Regulatory frameworks like the German GlüStV and US CFTC guidelines influence accessibility, particularly the “no-KYC up to $1,500” threshold, which allows immediate participation in this settled market without identity verification, though it does not alter the factual outcome[1]. Recent coverage on ESPN confirms the game’s live score and highlights, cementing the Chicago Sky’s victory as the definitive result[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

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

Where can I trade this market with the lowest fees?

On PolyGram, 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.

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.