PortlandFire vs. Chicago Sky

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Market context

The underlying event is the WNBA match between the Portland Fire and the Chicago Sky, played on 26 June at Wintrust Arena in Chicago. The game concluded with a decisive 124–94 victory for the Sky, confirming the market’s 0% YES probability for a Portland win as factually settled [3].

Historically, markets with such extreme crowd-implied odds (near 0%) typically resolve correctly when one side dominates by 20+ points, as seen in this contest where the Sky covered the -6.5 spread and the combined score hit 173.5 [1][2]. Comparable cases from the 2024–25 WNBA season show that when a team wins by 30 points with a star scoring a career-high without missing a shot, conditional orders programmed to close on such margins execute flawlessly, leaving no room for error in the resolution [7].

Traders should monitor official WNBA injury reports and schedule adjustments for any future make-up games, though this fixture is complete. The catalyst here was Kamilla Cardoso’s 30-point, perfect-shooting performance, which directly drove the outcome and should be tracked in post-game analytics for similar predictive models [7]. For programmatic approaches, conditional bots can be set to auto-close on scores exceeding a 25-point differential, a dependency that proved critical in this instance [3]. No further announcements are pending as the settlement window has effectively closed with the final score.

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.

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.

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.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, PolyGram triggers a quick verification flow that finishes in 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.