Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Prediction Today) Pick polygram.ink (preferred broker) |
88% | 12% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
88% | 12% | 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 |
|---|---|
| National Bank Open: Alex Michelsen vs Francisco Cerundolo Set 1 Winner | 88% |
| National Bank Open: Alex Michelsen vs Francisco Cerundolo | 75% |
| National Bank Open: Alex Michelsen vs Francisco Cerundolo Set 2 Winner | 57% |
| National Bank Open: Alex Michelsen vs Francisco Cerundolo Match O/U 21.5 | 54% |
| National Bank Open: Alex Michelsen vs Francisco Cerundolo Set Handicap +/-1.5 | 52% |
| Completed Match | 50% |
| National Bank Open: Alex Michelsen vs Francisco Cerundolo Set 2 O/U 8.5 | 50% |
| National Bank Open: Alex Michelsen vs Francisco Cerundolo Set 1 O/U 8.5 | 50% |
| National Bank Open: Alex Michelsen vs Francisco Cerundolo Set 2 O/U 9.5 | 50% |
| National Bank Open: Alex Michelsen vs Francisco Cerundolo Set 1 O/U 9.5 | 50% |
| National Bank Open: Alex Michelsen vs Francisco Cerundolo Set 2 O/U 10.5 | 50% |
| National Bank Open: Alex Michelsen vs Francisco Cerundolo Set 1 O/U 10.5 | 50% |
| National Bank Open: Alex Michelsen vs Francisco Cerundolo Match O/U 22.5 | 47% |
| National Bank Open: Alex Michelsen vs Francisco Cerundolo Match O/U 23.5 | 45% |
| National Bank Open: Alex Michelsen vs Francisco Cerundolo Total Sets: O/U 2.5 | 41% |
| National Bank Open: Alex Michelsen vs Francisco Cerundolo Set Handicap +/-1.5 | 9% |
Market context
Alex Michelsen and Francisco Cerúndolo are scheduled to play a second-round match at the National Bank Open, with the market currently leaning slightly towards Michelsen at 59%. That is broadly consistent with the published match boards, which have Michelsen around 60% projected in pre-match pricing and list the contest on 5 August in Montréal on outdoor hard court.[2][5][7]
The main historical frame is that this is a fairly even matchup despite the crowd leaning Michelsen: the head-to-head is level at 1-1, and one of Cerúndolo’s wins came in straight sets, indoors, which is less relevant to Montréal than the outdoor hard conditions here.[1][7] Recent tournament form also matters. Michelsen has already shown upside in Canada by beating Lorenzo Musetti in the previous round, while Cerúndolo arrived through his own opening win, so the market is weighing current form rather than just ranking gap.[13]
For traders, the key catalysts are whether the match remains on its scheduled court and start time, and whether there are any late order-of-play changes or weather-related delays, because the settlement rules shift to 50-50 if it is not played or is delayed beyond seven days.[5][6] Live scheduling pages currently still list the match as upcoming, with start-time indicators clustered around the afternoon ET window, so the most important update risk is a last-minute reschedule rather than a clear pre-match withdrawal signal.[3][8][15]
Methodology
This page reviews National Bank Open: Alex Michelsen vs Francisco Cerundolo across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Prediction Today, which mirrors the Polymarket order book at 0% fees.
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
- 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.
- 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.
- 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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