Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
82% | 18% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
82% | 18% | 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 |
|---|---|
| Cincinnati Open: Thiago Agustin Tirante vs Martin Landaluce Set 1 O/U 8.5 | 82% |
| Cincinnati Open: Thiago Agustin Tirante vs Martin Landaluce Match O/U 21.5 | 62% |
| Cincinnati Open: Thiago Agustin Tirante vs Martin Landaluce | 59% |
| Cincinnati Open: Thiago Agustin Tirante vs Martin Landaluce Set 1 O/U 9.5 | 56% |
| Cincinnati Open: Thiago Agustin Tirante vs Martin Landaluce Set 1 Winner | 55% |
| Cincinnati Open: Thiago Agustin Tirante vs Martin Landaluce Set 2 Winner | 54% |
| Cincinnati Open: Thiago Agustin Tirante vs Martin Landaluce Match O/U 22.5 | 54% |
| Completed Match | 50% |
| Cincinnati Open: Thiago Agustin Tirante vs Martin Landaluce Set 2 O/U 8.5 | 50% |
| Cincinnati Open: Thiago Agustin Tirante vs Martin Landaluce Set 2 O/U 9.5 | 50% |
| Cincinnati Open: Thiago Agustin Tirante vs Martin Landaluce Set 2 O/U 10.5 | 50% |
| Cincinnati Open: Thiago Agustin Tirante vs Martin Landaluce Match O/U 23.5 | 48% |
| Cincinnati Open: Thiago Agustin Tirante vs Martin Landaluce Total Sets: O/U 2.5 | 44% |
| Cincinnati Open: Thiago Agustin Tirante vs Martin Landaluce Set Handicap +/-1.5 | 33% |
| Cincinnati Open: Thiago Agustin Tirante vs Martin Landaluce Set 1 O/U 10.5 | 33% |
Market context
Thiago Agustin Tirante, an Argentine professional ranked outside the top 200, faces Martin Landaluce of Spain in the Cincinnati Open's early rounds on 17 August 2026. The match settlement hinges on a straightforward advance condition: Tirante must win the match to trigger YES resolution, whilst a Landaluce victory resolves to NO. The 59% crowd-implied probability favours Tirante, suggesting traders perceive a modest edge despite both players occupying similar ranking tiers on the ATP circuit.
Historical precedent for matches between players of comparable ranking shows volatile outcomes, particularly in Masters 1000 events where surface conditions and draw positioning create outsized variance. Landaluce's recent form and head-to-head record against Tirante—if any exists—would typically anchor baseline expectations, though limited match history between lower-ranked players often leaves markets reliant on broader ranking differentials and recent tournament results. The current 59% probability sits within a reasonable band for such matchups, neither extreme nor dismissive of either player's capability.
Traders should monitor ATP injury reports and withdrawal announcements through the settlement window closing 24 August 2026. Any schedule delays beyond seven days without completion trigger a 50-50 resolution, creating tail-risk exposure for positions held through the final week. Cincinnati's hard court conditions and August heat present physical demands that can shift match dynamics late in tournaments; recent performance on hard courts and stamina metrics from both players' preceding matches offer concrete data points for reassessing the current probability before match commencement.
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.
- What does a transaction cost on Polygon?
- Polygon gas is typically under $0.01 per transaction. A full trade cycle (Approve + Order + Fill) totals around $0.03 — compared to $5-50 on Ethereum mainnet.
- 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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