Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via PolyGram) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
100% | 0% | 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 |
|---|---|
| Cincinnati Open: Rafael Jodar vs Denis Shapovalov Set 1 O/U 8.5 | 100% |
| Cincinnati Open: Rafael Jodar vs Denis Shapovalov Set 1 Winner | 100% |
| Cincinnati Open: Rafael Jodar vs Denis Shapovalov Set 2 O/U 8.5 | 100% |
| Cincinnati Open: Rafael Jodar vs Denis Shapovalov Set 2 O/U 9.5 | 100% |
| Cincinnati Open: Rafael Jodar vs Denis Shapovalov Set 1 O/U 9.5 | 100% |
| Cincinnati Open: Rafael Jodar vs Denis Shapovalov Set 1 O/U 10.5 | 100% |
| Cincinnati Open: Rafael Jodar vs Denis Shapovalov Match O/U 22.5 | 99% |
| Cincinnati Open: Rafael Jodar vs Denis Shapovalov Match O/U 23.5 | 97% |
| Cincinnati Open: Rafael Jodar vs Denis Shapovalov Match O/U 21.5 | 66% |
| Cincinnati Open: Rafael Jodar vs Denis Shapovalov | 62% |
| Completed Match | 50% |
| Cincinnati Open: Rafael Jodar vs Denis Shapovalov Total Sets: O/U 2.5 | 50% |
| Cincinnati Open: Rafael Jodar vs Denis Shapovalov Set Handicap +/-1.5 | 6% |
| Cincinnati Open: Rafael Jodar vs Denis Shapovalov Set 2 Winner | 0% |
| Cincinnati Open: Rafael Jodar vs Denis Shapovalov Set 2 O/U 10.5 | 0% |
Market context
The Cincinnati Open first-round match between Spanish qualifier Rafael Jodar and Canadian Denis Shapovalov is scheduled for 15 August 2026. Polymarket currently prices Jodar's advancement at 62% (YES tokens trading above fair value relative to Shapovalov), reflecting modest confidence in the unseeded Spaniard despite Shapovalov's established ranking and prior Masters 1000 experience. The settlement window closes 22 August, allowing a seven-day buffer for rescheduling before the market resolves to 50-50 in the event of cancellation or unfinished play.
Shapovalov has contested Cincinnati twice previously, reaching the second round in 2019 and withdrawing in 2023 due to injury. Jodar, ranked outside the top 150, typically qualifies for Masters events rather than receiving direct entry; his baseline expectation in such matchups sits well below 50%. The current 62% YES probability suggests either significant recent form improvement for Jodar, injury concerns affecting Shapovalov's availability, or market mispricing relative to historical seeding patterns. Comparable first-round contests between top-100 players and qualifiers at Cincinnati have historically favoured the ranked player by 70–80% on Polymarket, making this line notably bullish on Jodar.
Traders should monitor ATP injury reports and practice-court activity in the week preceding 15 August, particularly any updates on Shapovalov's fitness or recent tournament results that might shift his form assessment. Court conditions and draw positioning could also influence match dynamics; hard courts at Cincinnati generally favour aggressive baseline players, a stylistic advantage Shapovalov has historically exploited. Polymarket's conditional token mechanics mean position holders can exit before settlement if new information emerges.
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
- 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 PolyGram. 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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