Chicago Sky vs. Atlanta Dream

Platform comparison

Market context

The WNBA fixture on 19 July pits the Chicago Sky against the Atlanta Dream at 4:00PM ET, with the market currently pricing a Sky victory at 0% implied probability. This extreme valuation aligns with sportsbook moneylines that designate Atlanta as heavy favourites, offering odds as low as 1.04 to win while pricing Chicago at 10.80[1]. FanDuel’s spread line of +10.5 for the Sky further underscores the disconnect, suggesting a ten-point margin is the baseline expectation rather than a competitive contest[3].

Historical matchups between these Eastern Conference sides reveal a persistent dominance by Atlanta, who have won nine of their last ten games as road favourites and hold a 2–0 record against Chicago in recent head-to-head encounters[5]. Comparable contracts in WNBA prediction markets where one team carries a 90%+ win probability typically resolve within 15 minutes of the final whistle, with no significant late-market drift unless a major injury occurs. The current 0% price reflects this entrenched form rather than a temporary anomaly, mirroring past instances where underdogs with sub-10% implied chances failed to cover even the spread.

Traders should monitor pre-game roster announcements for the Dream, particularly regarding All-Star Angel Reese, whose rebounding output often dictates the game’s tempo[5]. Any delay in the official injury report or a shift in the total points line from 180.5 could signal a change in market sentiment, though current consensus remains firmly on Atlanta[3][6]. With the settlement window closing at 20:00Z on 19 July, the contract’s binary nature leaves little room for mid-game volatility to alter the outcome once the opening whistle blows.

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

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'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.

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.