Las Vegas Aces vs. Chicago Sky

Platform comparison

Market context

The Las Vegas Aces defeated the Chicago Sky 95–83 in their WNBA matchup at the United Center on Sunday, 28 June 2026, with A’ja Wilson scoring 31 points to lead the Aces to a comfortable victory[7]. This result confirms the 100% YES crowd-implied probability that the Aces would win, resolving the prediction market to “Las Vegas Aces” as expected.

Historically, WNBA games featuring the Aces against lower-ranked opponents like the Sky have consistently produced decisive wins for the Aces, particularly when played at home or in neutral venues with strong fan support[6]. In similar conditional token markets on Polymarket, contracts priced at 100% for the Aces have rarely been overturned, as the team’s 13–5 season record and 8–2 away performance demonstrate sustained dominance[6]. Traders should note that games postponed or cancelled entirely are the only scenarios where such contracts might resolve 50–50, but no such disruption occurred here.

Key catalysts for traders include official game announcements, schedule updates, and broadcast dependencies, such as the CBS/Paramount+ coverage that confirmed the match proceeded without delay[5]. Recent highlights from ESPN confirm the final score and Wilson’s performance, validating the on-chain resolution[8]. With USDC settled on Polygon via conditional tokens, the market’s outcome is now immutable, reflecting the Aces’ clear superiority in this fixture.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

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 Polymarket Scam?. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

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 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 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.