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% |
| National Bank Open: Linda Noskova vs Caty McNally Set 1 O/U 8.5 | 100% |
| National Bank Open: Linda Noskova vs Caty McNally Set 1 O/U 9.5 | 100% |
| National Bank Open: Linda Noskova vs Caty McNally Set Handicap +/-1.5 | 100% |
| National Bank Open: Linda Noskova vs Caty McNally Set 1 O/U 10.5 | 100% |
| National Bank Open: Linda Noskova vs Caty McNally | 0% |
| National Bank Open: Linda Noskova vs Caty McNally Match O/U 21.5 | 0% |
| National Bank Open: Linda Noskova vs Caty McNally Set 2 O/U 8.5 | 0% |
| National Bank Open: Linda Noskova vs Caty McNally Set 1 Winner | 0% |
| National Bank Open: Linda Noskova vs Caty McNally Total Sets: O/U 2.5 | 0% |
| National Bank Open: Linda Noskova vs Caty McNally Set 2 Winner | 0% |
| National Bank Open: Linda Noskova vs Caty McNally Set Handicap +/-1.5 | 0% |
| National Bank Open: Linda Noskova vs Caty McNally Match O/U 22.5 | 0% |
| National Bank Open: Linda Noskova vs Caty McNally Set 2 O/U 9.5 | 0% |
| National Bank Open: Linda Noskova vs Caty McNally Match O/U 23.5 | 0% |
| National Bank Open: Linda Noskova vs Caty McNally Set 2 O/U 10.5 | 0% |
Market context
Linda Noskova and Caty McNally are scheduled for a second-round meeting at the National Bank Open, and the market’s 0% YES price is far below what the player data and recent form would ordinarily suggest. Noskova is ranked much higher than McNally on the WTA list, but McNally won their only previous meeting, a hard-court ITF match in Trnava in 2022, after coming from a set down.[1][8][11]
That head-to-head is still the cleanest historical reference point, but it is a small sample and both players’ profiles have changed since then. Noskova has generally carried the stronger tour-level record and arrived in Toronto as the higher-ranked seed, while McNally has shown she can still compete well on hard courts and has already gone deeper at this event before.[4][8][12] In comparable match-ups, the higher-ranked player usually starts as the more likely winner, but a prior win in the only meeting keeps the underdog’s advancement live enough to matter if the match is played.[1][4]
The main catalysts now are confirmation of the start time, court assignment, and whether the match is played as scheduled, because settlement depends on Noskova or McNally actually advancing rather than the contest being voided or left incomplete beyond the 7-day window. Live score services and the tournament’s own results page should show quickly if there is a delay, retirement, or walkover; the official match page already lists the encounter and completed second-round context from the draw.[9][11][17] If the event proceeds normally, the market should react most sharply to any sign of physical issues, a late withdrawal, or a redraw in the schedule.
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
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 Prediction Today. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- 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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