Chicago Sky vs. Phoenix Mercury

Platform comparison

Market context

The Chicago Sky face the Phoenix Mercury at the Mortgage Matchup Centre in Phoenix on Tuesday, 7 July, with tip-off set for 10:00pm ET. On Polymarket, this game-winning contract is priced at 67% YES for the Sky, implying a strong market belief in a Chicago victory despite traditional sportsbooks viewing the Mercury as favourites.

Historical WNBA pricing often diverges from on-chain sentiment when home teams carry negative moneyline odds yet face underperforming opponents. In this matchup, Phoenix sits at 8–13 and is favoured by 3.5 points at -152, translating to roughly a 60% win probability according to major sportsbooks[1][4]. The Sky, at 6–14 and having lost narrowly in overtime to the Aces, are +124 favourites on moneyline, suggesting a 45% chance[1]. The 67% Polymarket price therefore reflects a notable premium over conventional odds, possibly driven by conditional token liquidity or USDC staking incentives on Polygon that skew short-term pricing away from fundamental team strength.

Traders should monitor the final boxscore once the game concludes, as the market resolves strictly on the final score including overtime[1]. Any postponement keeps the contract open until completion, while a full cancellation without a make-up game forces a 50–50 split[1]. With the total points line set at 172.5, high-scoring outcomes could influence late liquidity flows, though the primary catalyst remains the win/loss result itself[1][5]. Live coverage is available on ESPN and regional broadcasters, ensuring real-time data feeds for on-chain settlement[3][6].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to PolyGram, which mirrors the Polymarket order book directly.

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

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'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?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram 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.