Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Prediction Today) 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 |
|---|---|
| Completed Match | 100% |
| Cincinnati Open: Juncheng Shang vs Lorenzo Sonego Set 1 O/U 8.5 | 100% |
| Cincinnati Open: Juncheng Shang vs Lorenzo Sonego Set 2 O/U 8.5 | 100% |
| Cincinnati Open: Juncheng Shang vs Lorenzo Sonego | 0% |
| Cincinnati Open: Juncheng Shang vs Lorenzo Sonego Set 1 Winner | 0% |
| Cincinnati Open: Juncheng Shang vs Lorenzo Sonego Total Sets: O/U 2.5 | 0% |
| Cincinnati Open: Juncheng Shang vs Lorenzo Sonego Set 2 Winner | 0% |
| Cincinnati Open: Juncheng Shang vs Lorenzo Sonego Match O/U 21.5 | 0% |
| Cincinnati Open: Juncheng Shang vs Lorenzo Sonego Set Handicap +/-1.5 | 0% |
| Cincinnati Open: Juncheng Shang vs Lorenzo Sonego Set 2 O/U 9.5 | 0% |
| Cincinnati Open: Juncheng Shang vs Lorenzo Sonego Match O/U 22.5 | 0% |
| Cincinnati Open: Juncheng Shang vs Lorenzo Sonego Set 1 O/U 9.5 | 0% |
| Cincinnati Open: Juncheng Shang vs Lorenzo Sonego Match O/U 23.5 | 0% |
| Cincinnati Open: Juncheng Shang vs Lorenzo Sonego Set 2 O/U 10.5 | 0% |
| Cincinnati Open: Juncheng Shang vs Lorenzo Sonego Set 1 O/U 10.5 | 0% |
Market context
Juncheng Shang and Lorenzo Sonego’s Cincinnati Open first-round match was listed as completed by the morning of 15 August, which sharply reduces the chance that the market remains live on a normal win-or-loss path. The market’s 0% YES implies traders have already priced out a Shang advance, but the real settlement risk now sits with whether the contest was in fact played to completion or left in a state that forces the 50-50 fallback.
The broader tennis context is straightforward: Cincinnati’s main draw runs from 13 to 23 August, with first-round matches clustered across 13-14 August and the second round beginning on 15-16 August. That timing matters because a first-round match originally scheduled for 13 August sits well inside the tournament’s ordinary seven-day window, so a delayed completion would still likely resolve before the fallback deadline of 20 August at 14:00 UTC.
For traders, the key catalysts are official order-of-play updates, scorecards, and any late schedule changes from the tournament or ATP/WTA feed. If the match was postponed, suspended, or carried over, the next confirmed court assignment and any withdrawal news would be decisive; if the result is already final, the market should settle on the recorded winner rather than the tie case.
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 Prediction Today, which mirrors the Polymarket order book directly.
Resolution & payout
Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.
Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.
UK Frequently Asked Questions
- Where can I trade this market with the lowest fees?
- Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Prediction Today. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- Is this market available outside the US?
- Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.
- 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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