PortlandFire vs. Washington Mystics

Platform comparison

Market context

The underlying event is a WNBA matchup between the Portland Fire and the Washington Mystics, scheduled for 3:00PM ET on 28 June at CareFirst Arena in Washington, DC. The game has already concluded, with the Mystics defeating the Fire 124–123 in quadruple overtime, meaning the prediction market will resolve to "Washington Mystics" and the current 0% implied probability for a Portland Fire win is factually aligned with the final result[1][7].

Historically, markets on games that have already been played collapse to certainty once results are confirmed, as seen in similar post-game prediction contracts where odds diverge sharply from live sportsbook lines until settlement is finalised. In this case, the divergence is stark: while sportsbooks listed the Mystics as favourites by 6.5 points pre-game[1], the prediction market now reflects 100% certainty for the Mystics, eliminating any trader opportunity and aligning perfectly with analyst consensus that the Fire’s expansion-era resilience evaporated after a fast start[6].

Traders should watch for official WNBA confirmations of the final score and any potential disputes over overtime rules, though ESPN’s immediate post-game report confirms the 124–123 result with Carla Leite scoring 32 points and forcing multiple overtimes[1][7]. No further catalysts exist, as the settlement window ends 28 June 2026 and the game is complete, rendering the market closed to new positions and fully resolved.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track PortlandFire vs. Washington Mystics across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Best Prediction Markets UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

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?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Best Prediction Markets UK trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

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.