Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Sport Prediction) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
100% | 0% | 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 |
|---|---|
| Natasha Cloud: Points O/U 10.5 | 100% |
| Sabrina Ionescu: Points O/U 16.5 | 57% |
| Kamilla Cardoso: Rebounds O/U 7.5 | 54% |
| O/U 179.5 | 53% |
| O/U 182.5 | 52% |
| Breanna Stewart: Points O/U 22.5 | 50% |
| Sabrina Ionescu: Points O/U 17.5 | 50% |
| Kamilla Cardoso: Points O/U 13.5 | 50% |
| Azurá Stevens: Points O/U 11.5 | 50% |
| Breanna Stewart: Rebounds O/U 8.5 | 50% |
| Azurá Stevens: Rebounds O/U 6.5 | 50% |
| Sabrina Ionescu: Rebounds O/U 3.5 | 50% |
| Natasha Cloud: Rebounds O/U 3.5 | 50% |
| Natasha Cloud: Assists O/U 6.5 | 50% |
| Sabrina Ionescu: Assists O/U 4.5 | 50% |
| Breanna Stewart: Assists O/U 3.5 | 50% |
| Jonquel Jones: Assists O/U 2.5 | 50% |
| Kamilla Cardoso: Assists O/U 2.5 | 50% |
| Azurá Stevens: Assists O/U 2.5 | 50% |
| Breanna Stewart: Points O/U 21.5 | 50% |
| Kamilla Cardoso: Points O/U 15.5 | 50% |
| Kamilla Cardoso: Rebounds O/U 8.5 | 50% |
| Natasha Cloud: Assists O/U 5.5 | 50% |
| O/U 180.5 | 49% |
| O/U 181.5 | 44% |
| New York Liberty vs. Chicago Sky | 40% |
| Jonquel Jones: Rebounds O/U 9.5 | 38% |
| Spread -4.5 | 35% |
| Spread -3.5 | 33% |
| Kamilla Cardoso: Points O/U 14.5 | 31% |
| Jonquel Jones: Points O/U 14.5 | 25% |
Market context
The New York Liberty face the Chicago Sky on 18 August at 9:00 PM ET in a regular-season WNBA matchup. The 40% implied probability for a Liberty victory reflects a competitive fixture between two teams with contrasting trajectories through the 2026 season. Chicago enters as slight favourites based on recent form, though New York's roster depth and playoff ambitions remain significant variables in the outcome.
Historical matchups between these franchises show relatively balanced results when accounting for home-court advantage, which favours New York in this instance. The Liberty's performance against comparable mid-tier opponents this season has ranged from decisive victories to narrow defeats, suggesting the 40% probability may underweight their home-court edge. Chicago's recent wins have come primarily against lower-seeded teams, raising questions about consistency against stronger competition. Previous seasons indicate that single-game variance in WNBA contests often exceeds pre-game probability spreads by 5–8 percentage points, particularly in August fixtures where roster rotations and injury management become pronounced.
Traders should monitor injury reports released 24–48 hours before tip-off, particularly regarding New York's key rotation players and Chicago's perimeter defence. Recent reporting from WNBA beat writers has highlighted potential load management decisions for both teams given the late-season timing. Roster availability announcements typically arrive by 6:00 PM ET on game day. The Liberty's home record at their venue stands at approximately 65% wins this season, a material factor in assessing the current probability. Any late-breaking trades or roster moves affecting either team's depth chart could shift market expectations materially in the final hours before settlement.
Live Data & Statistics
Live stats load when the match begins. Current market odds are shown above. Trading volume: $334K.
Methodology
Sports-specific comparison page for New York Liberty 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.
UK Frequently Asked Questions
- Are prediction markets better than sports betting?
- Prediction markets tend toward tighter odds than bookmakers because they use peer-to-peer exchange rather than bookmaker margin. On major matches, Polymarket quotes typically sit 2-5% closer to the true probability model than bet365 or DraftKings.
- What are live sports odds on Polymarket?
- Some top-tier matches stay open during play — you can trade the half-time probability in the 70th minute. Polymarket mid-prices update second-by-second; any frontend mirroring the order book shows the same movement.
- Is Polymarket legal in the UK?
- Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.
- Do I pay tax on prediction market profits in the UK?
- UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.
- How do I deposit on Polymarket from the UK?
- UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.
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