Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
60% | 40% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
60% | 40% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open live market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open live market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open live market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open live market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| O/U 164.5 | 60% |
| O/U 165.5 | 56% |
| O/U 166.5 | 55% |
| O/U 167.5 | 54% |
| Spread -13.5 | 53% |
| O/U 168.5 | 51% |
| Spread -14.5 | 50% |
| Olivia Nelson-Ododa: Points O/U 13.5 | 49% |
| O/U 169.5 | 47% |
| Chelsea Gray: Points O/U 12.5 | 47% |
| A'ja Wilson: Rebounds O/U 9.5 | 45% |
| Jackie Young: Rebounds O/U 4.5 | 43% |
| Chelsea Gray: Points O/U 11.5 | 38% |
| Jackie Young: Rebounds O/U 3.5 | 36% |
| NaLyssa Smith: Rebounds O/U 6.5 | 35% |
| Chelsea Gray: Rebounds O/U 2.5 | 35% |
| Jackie Young: Points O/U 19.5 | 34% |
| Chelsea Gray: Assists O/U 6.5 | 34% |
| Leïla Lacan: Assists O/U 4.5 | 33% |
| NaLyssa Smith: Points O/U 11.5 | 32% |
| A'ja Wilson: Assists O/U 2.5 | 32% |
| Olivia Nelson-Ododa: Points O/U 12.5 | 32% |
| A'ja Wilson: Points O/U 25.5 | 31% |
| Diamond Miller: Points O/U 11.5 | 31% |
| Jackie Young: Assists O/U 6.5 | 31% |
| Jackie Young: Points O/U 18.5 | 31% |
| Olivia Nelson-Ododa: Rebounds O/U 8.5 | 30% |
| Diamond Miller: Rebounds O/U 3.5 | 30% |
| Olivia Nelson-Ododa: Assists O/U 1.5 | 28% |
| Chelsea Gray: Rebounds O/U 3.5 | 28% |
| A'ja Wilson: Points O/U 26.5 | 26% |
| Connecticut Sun vs. Las Vegas Aces | 10% |
Market context
The Connecticut Sun face the Las Vegas Aces in a WNBA matchup on 20 August at 22:00 ET, with settlement occurring via USDC on the btc-prediction.bet platform by 02:00 UTC on 21 August. The current 10% implied probability for a Sun victory reflects the Aces' standing as one of the league's strongest franchises, though the odds suggest meaningful uncertainty remains. This game falls late in the regular season, when playoff positioning intensifies and team motivation shifts based on seeding implications.
Historical comparison with similar WNBA matchups shows that markets pricing one team at 10% often underestimate upset potential when the favourite faces fatigue or injury concerns. The Aces have maintained consistent excellence, yet the Sun have demonstrated capacity to compete against elite opposition. Traders should examine recent head-to-head records and current roster availability; injuries to key players—particularly on Las Vegas—have historically shifted these probabilities by 5–8 percentage points within 48 hours of tipoff. The settlement window's tight closure (approximately 4 hours post-game) leaves minimal room for dispute resolution.
Key catalysts include official injury reports released 24 hours before tipoff and any late-breaking roster updates from either franchise. Monitor WNBA's official schedule for confirmation; postponements would extend the market open. On-chain funding rates for USDC pairs remain stable, indicating no unusual leverage positioning tied to this specific event. Traders should cross-reference ESPN's injury tracker and the WNBA's official communications channels for roster confirmation, as these announcements often precede significant probability shifts in the final trading window.
Live Data & Statistics
Live stats load when the match begins. Current market odds are shown above. Trading volume: $71K.
Methodology
Methodologically this overview focuses on on-chain pricing: Polymarket's live mid comes from the Polygon conditional-token order book and settles automatically in USDC. The other three venues — Kalshi, Betfair, Manifold — sit alongside as off-chain reference points so you can see how the contract translates across regulatory and settlement regimes.
Resolution & payout
Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.
Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.
UK Frequently Asked Questions
- Why USDC and not ETH or USDT?
- USDC is the Polygon standard — audited reserves (Circle, monthly attestation), deepest order book, low gas costs. ETH volatility would distort probability quotes; USDT has thinner Polygon liquidity than USDC.
- Can I use Bitcoin directly?
- No, Polymarket operates exclusively in USDC on Polygon. You can bridge BTC to USDC via an exchange or bridge service and deposit on Polygon — typically 10-30 minutes processing time.
- 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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