Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via PolyGram) Pick polygram.ink (preferred broker) |
91% | 9% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
91% | 9% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Trade this market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Trade this market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Trade this market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Trade this market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| US Open ATP: Alexander Zverev vs Lorenzo Sonego | 91% |
| US Open ATP: Alexander Zverev vs Lorenzo Sonego Set 3 Winner | 80% |
| US Open ATP: Alexander Zverev vs Lorenzo Sonego Set 2 Winner | 78% |
| US Open ATP: Alexander Zverev vs Lorenzo Sonego Set 1 Winner | 75% |
| US Open ATP: Alexander Zverev vs Lorenzo Sonego Set Handicap +/-1.5 | 60% |
| Completed Match | 50% |
| US Open ATP: Alexander Zverev vs Lorenzo Sonego Set 2 O/U 8.5 | 50% |
| US Open ATP: Alexander Zverev vs Lorenzo Sonego Game Spread +/-6.5 | 50% |
| US Open ATP: Alexander Zverev vs Lorenzo Sonego Set 1 O/U 8.5 | 50% |
| US Open ATP: Alexander Zverev vs Lorenzo Sonego Set 2 O/U 9.5 | 50% |
| US Open ATP: Alexander Zverev vs Lorenzo Sonego Set Handicap +/-2.5 | 50% |
| US Open ATP: Alexander Zverev vs Lorenzo Sonego Set 1 O/U 9.5 | 50% |
| US Open ATP: Alexander Zverev vs Lorenzo Sonego Match O/U 40.5 | 50% |
| US Open ATP: Alexander Zverev vs Lorenzo Sonego Set 2 O/U 10.5 | 50% |
| US Open ATP: Alexander Zverev vs Lorenzo Sonego Set 1 O/U 10.5 | 50% |
| US Open ATP: Alexander Zverev vs Lorenzo Sonego Set 4 Winner | 50% |
| US Open ATP: Alexander Zverev vs Lorenzo Sonego Set 3 O/U 8.5 | 50% |
| US Open ATP: Alexander Zverev vs Lorenzo Sonego Set 3 O/U 9.5 | 50% |
| US Open ATP: Alexander Zverev vs Lorenzo Sonego Set 3 O/U 10.5 | 50% |
| US Open ATP: Alexander Zverev vs Lorenzo Sonego Set 4 O/U 8.5 | 50% |
| US Open ATP: Alexander Zverev vs Lorenzo Sonego Set 4 O/U 9.5 | 50% |
| US Open ATP: Alexander Zverev vs Lorenzo Sonego Set 4 O/U 10.5 | 50% |
| US Open ATP: Alexander Zverev vs Lorenzo Sonego Match O/U 36.5 | 46% |
| US Open ATP: Alexander Zverev vs Lorenzo Sonego Match O/U 38.5 | 40% |
| US Open ATP: Alexander Zverev vs Lorenzo Sonego Total Sets: O/U 3.5 | 35% |
| US Open ATP: Alexander Zverev vs Lorenzo Sonego Total Sets: O/U 4.5 | 18% |
Market context
Based on real-money crowd forecasting, us open atp: alexander zverev vs lorenzo sonego stands at 91% likelihood according to current market consensus. This market refers to the tennis match between Alexander Zverev and Lorenzo Sonego in the US Open ATP, originally scheduled for August 30, 2026 at 11:00AM ET. This market will res…
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.
UK Frequently Asked Questions
- 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.
- 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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