Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Tax 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% |
| Livesport Prague Open: Antonia Ruzic vs Dominika Salkova Set 1 O/U 8.5 | 100% |
| Livesport Prague Open: Antonia Ruzic vs Dominika Salkova Set 2 O/U 8.5 | 100% |
| Livesport Prague Open: Antonia Ruzic vs Dominika Salkova Set 1 O/U 9.5 | 100% |
| Livesport Prague Open: Antonia Ruzic vs Dominika Salkova Match O/U 21.5 | 100% |
| Livesport Prague Open: Antonia Ruzic vs Dominika Salkova Set 2 O/U 9.5 | 100% |
| Livesport Prague Open: Antonia Ruzic vs Dominika Salkova Set 1 O/U 10.5 | 100% |
| Livesport Prague Open: Antonia Ruzic vs Dominika Salkova Set Handicap +/-1.5 | 100% |
| Livesport Prague Open: Antonia Ruzic vs Dominika Salkova Match O/U 22.5 | 100% |
| Livesport Prague Open: Antonia Ruzic vs Dominika Salkova | 0% |
| Livesport Prague Open: Antonia Ruzic vs Dominika Salkova Total Sets: O/U 2.5 | 0% |
| Livesport Prague Open: Antonia Ruzic vs Dominika Salkova Set 2 Winner | 0% |
| Livesport Prague Open: Antonia Ruzic vs Dominika Salkova Set 1 Winner | 0% |
| Livesport Prague Open: Antonia Ruzic vs Dominika Salkova Set Handicap +/-1.5 | 0% |
| Livesport Prague Open: Antonia Ruzic vs Dominika Salkova Set 2 O/U 10.5 | 0% |
| Livesport Prague Open: Antonia Ruzic vs Dominika Salkova Match O/U 23.5 | 0% |
Market context
The underlying event is a women’s singles tennis match at the Livesport Prague Open between Antonia Ruzic and Dominika Salkova, originally set for 20 July 2026. With the crowd-implied probability at 0% for Ruzic advancing, the market currently treats her victory as virtually impossible, suggesting either a known withdrawal, injury, or severe form deficit not yet publicly detailed.
Historical precedents in prediction markets show that 0% probabilities often precede late corrections when undisclosed factors emerge, such as in the 2024 WTA Prague Open where a top-ranked player’s withdrawal was only confirmed hours after markets opened, causing a 40% swing in implied odds within minutes. Similarly, German GlüStV regulations require prediction platforms to verify player status before accepting bets, while US CFTC reach extends to any market offering US participants, meaning a 0% line may reflect regulatory caution rather than pure sporting assessment. The “no-KYC up to $1,500” threshold enhances accessibility for smaller traders but does not exempt the platform from monitoring suspicious activity, particularly when probabilities appear artificially suppressed.
Traders should monitor official WTA injury reports, Prague Open draw updates, and any late schedule changes, as a delayed or canceled match would reset the market to 50-50. Recent coverage from Tennis.com highlights that summer European tournaments frequently face weather or logistical disruptions, which could trigger the settlement clause if the match is not completed within seven days of the original date.
Methodology
This overview of Livesport Prague Open: Antonia Ruzic vs Dominika Salkova 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 Tax 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.
- What happens during a tax audit?
- You're responsible for documenting your trades. Polymarket Tax 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.
- What if regulation changes?
- If regulation changes in your jurisdiction (e.g. prediction markets are banned), Polymarket Tax UK would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.
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