Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Sport Prediction) Pick polygram.ink (preferred broker) |
99% | 1% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
99% | 1% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Jade Melbourne: Assists O/U 3.5 | 99% |
| O/U 169.5 | 91% |
| Azurá Stevens: Points O/U 13.5 | 90% |
| O/U 171.5 | 89% |
| O/U 170.5 | 88% |
| Spread -2.5 | 81% |
| Spread -3.5 | 80% |
| Azurá Stevens: Points O/U 12.5 | 51% |
| Sydney Taylor: Points O/U 14.5 | 50% |
| Awa Fam: Points O/U 12.5 | 50% |
| Dominique Malonga: Rebounds O/U 8.5 | 50% |
| Kamilla Cardoso: Assists O/U 2.5 | 50% |
| Sydney Taylor: Points O/U 15.5 | 50% |
| Kamilla Cardoso: Points O/U 15.5 | 49% |
| Natasha Cloud: Points O/U 10.5 | 49% |
| Kamilla Cardoso: Rebounds O/U 8.5 | 49% |
| Azurá Stevens: Rebounds O/U 7.5 | 49% |
| Awa Fam: Rebounds O/U 4.5 | 49% |
| Flau'jae Johnson: Rebounds O/U 4.5 | 49% |
| Natasha Cloud: Rebounds O/U 3.5 | 49% |
| Natasha Cloud: Assists O/U 5.5 | 49% |
| Courtney Vandersloot: Assists O/U 4.5 | 49% |
| Natisha Hiedeman: Assists O/U 4.5 | 49% |
| Natasha Cloud: Points O/U 11.5 | 49% |
| Awa Fam: Rebounds O/U 5.5 | 49% |
| Flau'jae Johnson: Rebounds O/U 5.5 | 49% |
| Natasha Cloud: Rebounds O/U 4.5 | 49% |
| Kamilla Cardoso: Points O/U 14.5 | 49% |
| Dominique Malonga: Rebounds O/U 9.5 | 49% |
| Seattle Storm vs. Chicago Sky | 14% |
Market context
The Seattle Storm face the Chicago Sky at Wintrust Arena on 15 July for a WNBA contest where the Storm hold a 14% crowd-implied chance of victory. Both teams are struggling this season, with Seattle sitting at 6–19 and Chicago at 7–16, yet the Storm have dominated this matchup historically, sweeping the three-game regular-season series last year with scores of 95–57, 79–69, and 94–88 [3][6][10].
Historical dominance frames the current probability: when a team has won every prior meeting in a season by double digits, a 14% win chance for the superior side suggests the market is pricing in a severe form collapse or key absences rather than a genuine competitive shift. In comparable cases where a dominant team’s win probability drops below 20% against a weaker opponent they have repeatedly beaten, the outcome usually hinges on injury reports or coaching adjustments rather than a true reversal of form.
Traders should monitor pre-game announcements for Natisha Hiedeman, who scored 31 points in Seattle’s recent loss to Washington, and Nneka Ogwumike, whose 24-point outing preceded a narrow defeat to Phoenix [5][7]. The Sky’s poor record in games decided by 10 points or more (5–18) and their 5–12 home record add volatility, but the primary catalyst is whether Seattle’s Western Conference struggles (1–12) persist or if Chicago’s Eastern Conference form (1–7) improves under current coaching [2][5]. No major coaching changes have been reported, but any late absences in the Storm’s frontcourt could widen the gap further.
Live Data & Statistics
Live stats load when the match begins. Current market odds are shown above. Trading volume: $362K.
Methodology
Sports-specific comparison page for Seattle Storm vs. Chicago Sky. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi or Manifold.
Resolution & payout
Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.
FAQ
- When do sports markets resolve?
- Typically within hours of the official final whistle. Polymarket uses UMA Optimistic Oracle with source URLs pointing at official league data feeds — e.g. the Premier League for EPL markets, UEFA for Champions League, FIFA for World Cup.
- Can I bet on individual matches?
- Yes, Polymarket lists every major Premier League / Champions League / World Cup match as its own market. Liquidity varies — top matches like El Clásico or a semi-final often have six-figure pools, lower-league games closer to three-figure.
- Which sports markets are available?
- Football (soccer) dominates — Champions League, World Cup, Premier League, La Liga, Bundesliga — followed by NFL, NBA, tennis Grand Slams, Formula 1, boxing/MMA. Resolution via official league source confirmation.
- How fast do sports winnings settle?
- Once the official league outcome is logged in the UMA Oracle (typically 1-2 hours after the final whistle), Polymarket's smart contract triggers USDC payout. To your wallet within minutes.
- Can I import form data and lineups?
- This page shows the live Polymarket quote as an implied probability. Form data and lineups must be researched separately via sports data providers (e.g. Soccerway, ESPN, FBref) — we surface the market probability, not the sport analysis.
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