Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Sport Prediction) 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% |
| Warsaw: Justina Mikulskyte vs Gabriela Knutson Set 2 O/U 8.5 | 100% |
| Warsaw: Justina Mikulskyte vs Gabriela Knutson Set 2 O/U 9.5 | 100% |
| Warsaw: Justina Mikulskyte vs Gabriela Knutson Set Handicap +/-1.5 | 100% |
| Warsaw: Justina Mikulskyte vs Gabriela Knutson | 0% |
| Warsaw: Justina Mikulskyte vs Gabriela Knutson Set 2 Winner | 0% |
| Warsaw: Justina Mikulskyte vs Gabriela Knutson Set 1 Winner | 0% |
| Warsaw: Justina Mikulskyte vs Gabriela Knutson Total Sets: O/U 2.5 | 0% |
| Warsaw: Justina Mikulskyte vs Gabriela Knutson Set 1 O/U 8.5 | 0% |
| Warsaw: Justina Mikulskyte vs Gabriela Knutson Match O/U 21.5 | 0% |
| Warsaw: Justina Mikulskyte vs Gabriela Knutson Match O/U 22.5 | 0% |
| Warsaw: Justina Mikulskyte vs Gabriela Knutson Set 1 O/U 9.5 | 0% |
| Warsaw: Justina Mikulskyte vs Gabriela Knutson Set 2 O/U 10.5 | 0% |
| Warsaw: Justina Mikulskyte vs Gabriela Knutson Match O/U 23.5 | 0% |
| Warsaw: Justina Mikulskyte vs Gabriela Knutson Set 1 O/U 10.5 | 0% |
| Warsaw: Justina Mikulskyte vs Gabriela Knutson Set Handicap +/-1.5 | 0% |
Market context
Justina Mikulskyte meets Gabriela Knutson in the Warsaw quarter-final, with the market effectively treating Knutson as the stronger side despite a 0% YES crowd price. The main historical frame is simple: these players have already gone to three sets once, with Knutson edging Mikulskyte 6-0, 5-7, 7-5 in Midland in November 2024, while some head-to-head databases now record Knutson as 1-0 and others as 2-0 depending on how earlier results are counted or indexed. The ranking gap also leans Knutson’s way, with Knutson listed at WTA No. 219 and Mikulskyte at No. 241 in current match listings.[2][7][17]
For traders, the key catalyst is whether the quarter-final actually goes ahead as scheduled on centre court, because the market settles 50-50 if the match is cancelled, not played, or pushed beyond the seven-day delay window. The live match listings place the contest on 6 August 2026 at 09:00 local time in Warsaw, but there is already some schedule noise across feeds, which is common in WTA 125 events and can matter if the order of play changes or the match is moved.[1][6][8] Recent betting markets also have Knutson as a clear favourite, which is consistent with the ranking edge and prior head-to-head, but any late withdrawal, medical timeout-related retirement, or reshuffling from earlier rounds would be the main dependency to watch rather than broader tour context.[14][16][19]
Methodology
Sports-specific comparison page for Warsaw: Justina Mikulskyte vs Gabriela Knutson. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi or Manifold.
Resolution & payout
Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.
UK Frequently Asked Questions
- Are prediction markets better than sports betting?
- Prediction markets tend toward tighter odds than bookmakers because they use peer-to-peer exchange rather than bookmaker margin. On major matches, Polymarket quotes typically sit 2-5% closer to the true probability model than bet365 or DraftKings.
- Which sports markets are available?
- Football (soccer) dominates — Champions League, World Cup, Premier League, La Liga, Bundesliga — followed by NFL, NBA, tennis Grand Slams, Formula 1, boxing/MMA. Resolution via official league source confirmation.
- 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%.
Trade Warsaw: Justina Mikulskyte vs Gabriela Knutson on Sport Prediction
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