Sports

Trade: Chicago Sky vs. Washington Mystics

Opened 20 May 2026 · Settles 2 June 2026

Resolution criteria on PolyGram: In the upcoming WNBA game, scheduled for June 2 at 7:30PM ET: If the Chicago Sky win, the market will resolve to "Chicago Sky". If the Washington Mystics win, the market will resolve to "Washington Mystics". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50.

PolyGram is an on-chain prediction market where you trade YES or NO outcome shares with real USDC on Polygon. For this market, buy YES if you believe the event will happen, or NO if you think it won't. Your maximum loss is your stake — winning shares pay $1.00 each at resolution. Unlike sportsbooks, there is no house edge: prices are set by supply and demand from other traders and reflect the crowd's real-time probability.

Liquidity: —
Total Volume: $429K
24h Volume: $402K
Open Interest: $300K

Trade this market on PolyGram →

Market outcomes

Chicago Sky vs. Washington Mystics	0% YES	100% NO
O/U 160.5	100% YES	0% NO
O/U 164.5	0% YES	100% NO
Spread -2.5	100% YES	0% NO
O/U 161.5	100% YES	0% NO
Spread -1.5	100% YES	0% NO
O/U 163.5	0% YES	100% NO
O/U 162.5	0% YES	100% NO

Market context

The Chicago Sky face the Washington Mystics on 2 June at 7:30PM ET in a regular-season WNBA matchup. The current order book on Polymarket reflects a 53% implied probability for a Chicago victory, suggesting modest confidence in the home team's chances. This probability has formed through active trading across the market's liquidity pools, with the spread indicating a relatively competitive fixture rather than a heavily favoured outcome.

Historical matchups between these franchises show competitive contests with outcomes dependent on roster health and form at the specific point in the season. The Sky have established themselves as a playoff-calibre team in recent years, whilst the Mystics have shown variability in performance. At this stage of the WNBA season, June positioning typically reflects teams' mid-season momentum and injury status. The 53% probability sits within the range typical for fixtures between evenly matched conference opponents, neither suggesting a clear favourite nor indicating significant uncertainty.

Traders should monitor roster announcements in the days preceding the fixture, particularly regarding player availability and injury updates from either franchise. Weather conditions are unlikely to affect an indoor arena fixture, but schedule compression or back-to-back games could influence team fatigue levels. Recent WNBA standings and win-loss records as of early June will provide context for whether either team is experiencing a winning or losing streak heading into the matchup. Any official postponement announcements would trigger the market's contingency provisions, keeping it open until completion.

Wikipedia Context

Chicago Sky
The Chicago Sky are an American professional basketball team based in Chicago. The Sky compete in the Women's National Basketball Association (WNBA) as a member of the Eastern Conference. The franchise was founded prior to the 2006 season. The Sky experienced a period of success from 2013 to 2016, making four playoff appearances and playing in the 2014 WNBA
American Basketball Association (2000–present)
The American Basketball Association (ABA) is an American semi-professional men's basketball minor league that was founded in 1999.
Dye
A dye is a colored substance that is soluble in some solvent; by contrast pigments are insoluble or nearly so in all solvents. Because of their solubility, dyes can chemically bind to the material they color. Dye is generally applied in an aqueous solution and may require a mordant to improve the fastness of the dye on the fiber.
Interstate 90 in Illinois
Interstate 90 (I-90) in the US state of Illinois runs roughly northwest-to-southeast through the northern part of the state. Entering Illinois at the Wisconsin state line in South Beloit, it passes through the Rock River Valley and the suburbs of Rockford, where it turns eastward, heading towards Chicago through farmland west of the Fox River Valley and thro

Resolution source

This market settles from the official outcome published at https://www.wnba.com/. A proposer submits the final result to the UMA optimistic oracle on Polygon; the two-hour dispute window closes and payouts clear in USDC.

How to trade this market step by step

The mechanics for trading "Chicago Sky vs. Washington Mystics" are the same as any other PolyGram sporting event contract. Each YES share resolves to $1 if the event happens, or $0 if it doesn't. The current price between 0¢ and 100¢ is the market's probability estimate, set live by the order book.

Sign in on polygram.ink with your email — no full KYC under $1,500 lifetime trading volume.
Deposit USDC on Polygon (lowest fees, ~$0.01 per transaction) or Ethereum. Funds credit after 12 confirmations.
Pick a side. Buy YES if you believe the event will happen; buy NO if you think it won't. The current YES price reflects the market's collective probability.
Size your position. If you stake 100 USDC at 50% YES, you'll receive shares that pay $200 if YES resolves true — a 100% gross return. If NO resolves, your shares are worth $0.
Set risk controls (optional). Stop-loss, take-profit, and limit-order types all supported. Use the trade ticket's slippage box to cap your maximum entry price.
Wait for resolution. When the event resolves on-chain via the UMA optimistic oracle, the winning side settles to 100¢ automatically and USDC hits your balance within seconds. Withdrawable to any wallet you control.

How active is this market?

$429K in lifetime turnover and $0 of resting liquidity puts this market in the top 10% by volume for sports contracts on PolyGram. Order-book depth is thin — large orders may need to be split across the book or executed as limit orders.

Last 24 hours alone saw $402K in turnover, well above the lifetime daily-average for this market — a clear sign of news catalysing trader activity right now.

The market has been open for under a month — fresh enough that information asymmetry remains a real factor.

Higher-volume markets tend to have tighter spreads and faster price discovery — meaning the displayed YES/NO percentages are more likely to reflect the true crowd-implied probability rather than a single trader's directional view.

Key terms

YES / NO share: A binary outcome token that pays $1.00 if the underlying claim resolves true (YES) or false (NO), and $0 otherwise. The market price between 0¢ and 100¢ is the implied probability.
CLOB: Central limit order book. The matching engine that pairs YES buyers with NO buyers (effectively the same trade). Polymarket's CLOB on Polygon executes trades on-chain via the conditional-tokens framework.
Liquidity: USDC capital sitting in resting limit orders inside the order book. Deeper liquidity means smaller slippage on large trades and a tighter bid-ask spread.
UMA optimistic oracle: The on-chain dispute system that settles each Polymarket market. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution.
Slippage: The difference between the displayed mid-price and your fill price. Affects market orders most; limit orders avoid slippage but may take time to fill.
Conditional token: ERC-1155 outcome share issued by Gnosis Conditional Tokens on Polygon. The token type that resolves to $1.00 or $0.00 at settlement.

See the full prediction-market glossary →

Frequently asked questions

How does this market resolve?

Resolution is sourced from https://www.wnba.com/. Settlement is executed by the UMA optimistic oracle on Polygon, with a 2-hour dispute window before payouts clear.

When does this market close?

This prediction market is scheduled to close on 2 June 2026. After the resolving event occurs, settlement typically clears within 24 hours once the UMA optimistic oracle confirms the outcome. All payouts are in USDC on the Polygon network.

How can I trade on "Chicago Sky vs. Washington Mystics"?

To trade on this prediction market, create a free PolyGram account at polygram.ink, deposit USDC via Polygon, and place a YES or NO order on the outcome you believe in. You can learn more on our how-it-works page. Your maximum loss is limited to your stake — there is no leverage or margin.

What happens when the market resolves?

When the outcome is determined, winning YES shares pay out $1.00 each in USDC, while losing shares pay $0. Settlement is handled by the UMA optimistic oracle on Polygon — a proposer submits the result, a two-hour dispute window opens, and if uncontested, payouts are distributed automatically. You can withdraw your winnings to any Polygon wallet.

Risk and regulatory note

Prediction-market positions can lose 100% of staked capital. Outcomes are uncertain by definition — historical accuracy of crowd-implied probabilities is high in aggregate but not for any single market. PolyGram does not provide investment advice. Trade only with capital you can afford to lose.

Regulatory status varies by jurisdiction. Germany, the United States, and most EU countries treat Polymarket-style event contracts under one of three frameworks: financial derivative, gambling product, or unregulated novel asset. Consult local counsel before trading.

View live odds & trade →

Related prediction markets

Explore more prediction market odds and trading opportunities on PolyGram: