Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
100% | 0% | 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 |
|---|---|
| National Bank Open: Daniel Merida Aguilar vs Alex Michelsen | 100% |
| Completed Match | 100% |
| National Bank Open: Daniel Merida Aguilar vs Alex Michelsen Set 1 Winner | 100% |
| National Bank Open: Daniel Merida Aguilar vs Alex Michelsen Total Sets: O/U 2.5 | 100% |
| National Bank Open: Daniel Merida Aguilar vs Alex Michelsen Set 1 O/U 8.5 | 100% |
| National Bank Open: Daniel Merida Aguilar vs Alex Michelsen Match O/U 21.5 | 100% |
| National Bank Open: Daniel Merida Aguilar vs Alex Michelsen Set 2 O/U 8.5 | 100% |
| National Bank Open: Daniel Merida Aguilar vs Alex Michelsen Match O/U 22.5 | 100% |
| National Bank Open: Daniel Merida Aguilar vs Alex Michelsen Set 2 O/U 9.5 | 100% |
| National Bank Open: Daniel Merida Aguilar vs Alex Michelsen Set 1 O/U 9.5 | 100% |
| National Bank Open: Daniel Merida Aguilar vs Alex Michelsen Match O/U 23.5 | 100% |
| National Bank Open: Daniel Merida Aguilar vs Alex Michelsen Set 2 O/U 10.5 | 100% |
| National Bank Open: Daniel Merida Aguilar vs Alex Michelsen Set 2 Winner | 0% |
| National Bank Open: Daniel Merida Aguilar vs Alex Michelsen Set Handicap +/-1.5 | 0% |
| National Bank Open: Daniel Merida Aguilar vs Alex Michelsen Set Handicap +/-1.5 | 0% |
| National Bank Open: Daniel Merida Aguilar vs Alex Michelsen Set 1 O/U 10.5 | 0% |
Market context
Daniel Merida Aguilar and Alex Michelsen are scheduled to meet in the National Bank Open on outdoor hard courts in Montreal, with Michelsen the higher-ranked player and the market currently pricing Merida at 36% to advance. The pair have already met once this season, and Michelsen won that match in straight sets, 6-3 6-4, on hard court in Indian Wells earlier in 2026.[10][15]
That head-to-head gives the market a useful baseline, but recent form keeps the pricing from being one-sided. Michelsen has looked efficient in Montreal, including a straight-sets win over Francisco Cerúndolo, while Merida has already shown he can upset seeded opposition here by beating Ugo Humbert in straight sets.[12][17] On paper, the combination of Michelsen’s ranking edge and prior hard-court win explains why the underdog is not priced more aggressively.
For traders, the main catalysts are simple: whether the match starts on schedule, whether either player is moved due to the tournament’s court rotation, and whether any late withdrawal or rain delay pushes settlement risk towards the contract’s fallback rules. The market resolves on the actual match result if play is completed, but if the contest is not played or is delayed beyond seven days without a winner, it falls back to 50-50, so the timing of the first ball is as important as the level of tennis.[7][17]
Methodology
This page reads National Bank Open: Daniel Merida Aguilar vs Alex Michelsen on-chain. Polymarket's quote comes directly from the Polygon order book — the only comparable venue with on-chain settlement. Kalshi (USD, off-chain), Betfair (GBP/EUR, off-chain) and Manifold (play-money) are listed alongside for venue context. Every CTA routes to BTC Prediction, which mirrors the Polymarket order book directly.
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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