Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Legal UK) 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 |
|---|---|
| Completed Match | 100% |
| National Bank Open: Janice Tjen vs Liudmila Samsonova Set 1 O/U 8.5 | 100% |
| National Bank Open: Janice Tjen vs Liudmila Samsonova Set 2 O/U 8.5 | 100% |
| National Bank Open: Janice Tjen vs Liudmila Samsonova Match O/U 21.5 | 100% |
| National Bank Open: Janice Tjen vs Liudmila Samsonova Set 1 O/U 9.5 | 100% |
| National Bank Open: Janice Tjen vs Liudmila Samsonova Set 2 O/U 9.5 | 100% |
| National Bank Open: Janice Tjen vs Liudmila Samsonova Set Handicap +/-1.5 | 100% |
| National Bank Open: Janice Tjen vs Liudmila Samsonova Match O/U 22.5 | 100% |
| National Bank Open: Janice Tjen vs Liudmila Samsonova Set 1 O/U 10.5 | 100% |
| National Bank Open: Janice Tjen vs Liudmila Samsonova Set 2 O/U 10.5 | 100% |
| National Bank Open: Janice Tjen vs Liudmila Samsonova Match O/U 23.5 | 100% |
| National Bank Open: Janice Tjen vs Liudmila Samsonova | 0% |
| National Bank Open: Janice Tjen vs Liudmila Samsonova Total Sets: O/U 2.5 | 0% |
| National Bank Open: Janice Tjen vs Liudmila Samsonova Set 1 Winner | 0% |
| National Bank Open: Janice Tjen vs Liudmila Samsonova Set 2 Winner | 0% |
| National Bank Open: Janice Tjen vs Liudmila Samsonova Set Handicap +/-1.5 | 0% |
Market context
Janice Tjen and Liudmila Samsonova are scheduled to meet in the National Bank Open women’s draw, and the market resolves on who advances, not on set score. The current 0% crowd-implied probability for a Tjen win is hard to square with the fact that the pair have already met once this season, with Samsonova winning 2-0 in Abu Dhabi on hard court.[1][5][6]
That prior result gives traders a clean comparable: Samsonova handled the matchup with stronger service numbers and a straight-sets win, while Tjen has still been competitive enough to sit inside the WTA top 40 in the live event listings used by score providers.[2][6][4] In practice, a 0% print usually reflects thin liquidity or an anchored crowd view rather than a literal absence of upset chance, so it should be read cautiously against the underlying tennis data. From a market-access angle, German users face GlüStV constraints around gambling-style products, while US participation can attract CFTC jurisdictional questions depending on platform structure and user location; the advertised no-KYC limit up to $1,500 means smaller positions may be placed without full identity verification, but that does not remove local regulatory restrictions.
The main catalysts are straightforward: final match confirmation, any draw revision, and whether the fixture starts on time or is delayed beyond the seven-day settlement window, because cancellation or an unresolved delay pushes the market to a 50-50 outcome under the rules. Traders should also watch for any last-minute retirement, withdrawal, or schedule change from the National Bank Open, as tournament tennis markets can reprice sharply when official order-of-play notices change or a player scratches after the market has already opened.[4]
Methodology
This overview of National Bank Open: Janice Tjen vs Liudmila Samsonova reviews the four comparable platforms from a regulatory perspective: which is accessible in your jurisdiction, where KYC kicks in, how the platform is classified by your country of residence. Live probability is the Polymarket mid; comparison columns show regulatory status, KYC thresholds and settlement options for each platform.
Resolution & payout
On Polymarket, resolution runs on-chain via UMA Optimistic Oracle. USDC payout is instant and automatic, with no KYC. Tax treatment depends on your jurisdiction — in the US, gains are usually ordinary income; in the UK, often capital gains. Consult a tax professional for your situation.
FAQ
- Is Polymarket legal in my country?
- Polymarket is geo-blocked in the US/UK/EU. Actual usage via the Polymarket interface is not possible there. The legal status itself varies — many countries treat prediction markets as a gray area. Polymarket Legal UK has a different geo footprint.
- How are winnings taxed?
- Tax treatment varies by jurisdiction. In most countries, prediction market gains are treated as ordinary income or capital gains. We cannot provide tax advice — consult a tax professional for your specific situation.
- Can I trade anonymously?
- Pseudonymously, yes — up to the KYC threshold. Polymarket Legal UK stores an email address and wallet addresses rather than a legal name. Over $1,500 lifetime volume triggers KYC, after which identity is no longer anonymous.
- What happens during a tax audit?
- You're responsible for documenting your trades. Polymarket Legal UK exports a full transaction history (CSV/PDF) for tax reporting. In an audit you'll need to present these documents.
- Are prediction markets gambling?
- Legally unclear in most jurisdictions. Some interpretations classify them as wagering (gambling regulation applies), others as derivatives (financial regulation applies). There's no global precedent specifically for on-chain prediction markets.
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